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Stofn (líffræði) - Wikipedia, frjálsa alfræðiritið
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en það er ekki skylda" class=""><span>Búa til aðgang</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Kerfiss%C3%AD%C3%B0a:Innskr%C3%A1&returnto=Stofn+%28l%C3%ADffr%C3%A6%C3%B0i%29" title="Þú ert hvattur/hvött til að innskrá þig, það er hinsvegar ekki skylda. [o]" accesskey="o" class=""><span>Skrá inn</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out" title="Frekari valkostir" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="Persónuleg verkfæri" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">Persónuleg verkfæri</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="Notandavalmynd" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_is.wikipedia.org&uselang=is"><span>Fjárframlög</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Kerfiss%C3%AD%C3%B0a:B%C3%BAa_til_a%C3%B0gang&returnto=Stofn+%28l%C3%ADffr%C3%A6%C3%B0i%29" title="Þú ert hvattur/hvött til að búa til aðgang og skrá þig inn; en það er ekki skylda"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Búa til aðgang</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Kerfiss%C3%AD%C3%B0a:Innskr%C3%A1&returnto=Stofn+%28l%C3%ADffr%C3%A6%C3%B0i%29" title="Þú ert hvattur/hvött til að innskrá þig, það er hinsvegar ekki skylda. [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Skrá inn</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Síður fyrir útskráða notendur <a href="/wiki/Hj%C3%A1lp:Introduction" aria-label="Læra meira um breytingar"><span>Læra meira</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Kerfiss%C3%AD%C3%B0a:Framl%C3%B6g_m%C3%ADn" title="Listi yfir breytingar frá þessu IP-staðfangi [y]" accesskey="y"><span>Framlög</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Kerfiss%C3%AD%C3%B0a:Spjallas%C3%AD%C3%B0a_m%C3%ADn" title="Spjall um breytingar frá þessu IP-staðfangi [n]" accesskey="n"><span>Spjall</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"><!-- CentralNotice --></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Vefsíða"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Efni" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Efni</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">færa í hliðarstiku</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">fela</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">Byrjun</div> </a> </li> <li id="toc-Tilvísanir" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Tilvísanir"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Tilvísanir</span> </div> </a> <ul id="toc-Tilvísanir-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Efni" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Sýna/fela efnisyfirlit" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Sýna/fela efnisyfirlit</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Stofn (líffræði)</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Fara á grein á öðru tungumáli. Til staðar á 66 tungumálum" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-66" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">66 tungumál</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%AA%D8%B9%D8%AF%D8%A7%D8%AF_%D8%A7%D9%84%D8%B3%D9%83%D8%A7%D9%86" title="تعداد السكان – arabíska" lang="ar" hreflang="ar" data-title="تعداد السكان" data-language-autonym="العربية" data-language-local-name="arabíska" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Populyasiya" title="Populyasiya – aserska" lang="az" hreflang="az" data-title="Populyasiya" data-language-autonym="Azərbaycanca" data-language-local-name="aserska" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-ba mw-list-item"><a href="https://ba.wikipedia.org/wiki/%D0%9F%D0%BE%D0%BF%D1%83%D0%BB%D1%8F%D1%86%D0%B8%D1%8F" title="Популяция – baskír" lang="ba" hreflang="ba" data-title="Популяция" data-language-autonym="Башҡортса" data-language-local-name="baskír" class="interlanguage-link-target"><span>Башҡортса</span></a></li><li class="interlanguage-link interwiki-bcl mw-list-item"><a href="https://bcl.wikipedia.org/wiki/Populasyon" title="Populasyon – Central Bikol" lang="bcl" hreflang="bcl" data-title="Populasyon" data-language-autonym="Bikol Central" data-language-local-name="Central Bikol" class="interlanguage-link-target"><span>Bikol Central</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%9F%D0%B0%D0%BF%D1%83%D0%BB%D1%8F%D1%86%D1%8B%D1%8F" title="Папуляцыя – hvítrússneska" lang="be" hreflang="be" data-title="Папуляцыя" data-language-autonym="Беларуская" data-language-local-name="hvítrússneska" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-be-x-old mw-list-item"><a href="https://be-tarask.wikipedia.org/wiki/%D0%9F%D0%B0%D0%BF%D1%83%D0%BB%D1%8F%D1%86%D1%8B%D1%8F" title="Папуляцыя – Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="Папуляцыя" data-language-autonym="Беларуская (тарашкевіца)" data-language-local-name="Belarusian (Taraškievica orthography)" class="interlanguage-link-target"><span>Беларуская (тарашкевіца)</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%9F%D0%BE%D0%BF%D1%83%D0%BB%D0%B0%D1%86%D0%B8%D1%8F" title="Популация – búlgarska" lang="bg" hreflang="bg" data-title="Популация" data-language-autonym="Български" data-language-local-name="búlgarska" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%9C%E0%A7%80%E0%A6%AC%E0%A6%97%E0%A7%8B%E0%A6%B7%E0%A7%8D%E0%A6%A0%E0%A7%80" title="জীবগোষ্ঠী – bengalska" lang="bn" hreflang="bn" data-title="জীবগোষ্ঠী" data-language-autonym="বাংলা" data-language-local-name="bengalska" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Populacija" title="Populacija – bosníska" lang="bs" hreflang="bs" data-title="Populacija" data-language-autonym="Bosanski" data-language-local-name="bosníska" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Poblaci%C3%B3" title="Població – katalónska" lang="ca" hreflang="ca" data-title="Població" data-language-autonym="Català" data-language-local-name="katalónska" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%D8%AF%D8%A7%D9%86%DB%8C%D8%B4%D8%AA%D9%88%D9%88%D8%A7%D9%86" title="دانیشتووان – miðkúrdíska" lang="ckb" hreflang="ckb" data-title="دانیشتووان" data-language-autonym="کوردی" data-language-local-name="miðkúrdíska" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Populace" title="Populace – tékkneska" lang="cs" hreflang="cs" data-title="Populace" data-language-autonym="Čeština" data-language-local-name="tékkneska" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Population" title="Population – danska" lang="da" hreflang="da" data-title="Population" data-language-autonym="Dansk" data-language-local-name="danska" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Population_(Biologie)" title="Population (Biologie) – þýska" lang="de" hreflang="de" data-title="Population (Biologie)" data-language-autonym="Deutsch" data-language-local-name="þýska" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Population" title="Population – enska" lang="en" hreflang="en" data-title="Population" data-language-autonym="English" data-language-local-name="enska" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Populacio" title="Populacio – esperantó" lang="eo" hreflang="eo" data-title="Populacio" data-language-autonym="Esperanto" data-language-local-name="esperantó" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Poblaci%C3%B3n" title="Población – spænska" lang="es" hreflang="es" data-title="Población" data-language-autonym="Español" data-language-local-name="spænska" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Populatsioon" title="Populatsioon – eistneska" lang="et" hreflang="et" data-title="Populatsioon" data-language-autonym="Eesti" data-language-local-name="eistneska" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Populazio_(biologia)" title="Populazio (biologia) – baskneska" lang="eu" hreflang="eu" data-title="Populazio (biologia)" data-language-autonym="Euskara" data-language-local-name="baskneska" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%AC%D9%85%D8%B9%DB%8C%D8%AA_(%D8%B2%DB%8C%D8%B3%D8%AA%E2%80%8C%D8%B4%D9%86%D8%A7%D8%B3%DB%8C)" title="جمعیت (زیستشناسی) – persneska" lang="fa" hreflang="fa" data-title="جمعیت (زیستشناسی)" data-language-autonym="فارسی" data-language-local-name="persneska" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Populaatio" title="Populaatio – finnska" lang="fi" hreflang="fi" data-title="Populaatio" data-language-autonym="Suomi" data-language-local-name="finnska" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Population" title="Population – franska" lang="fr" hreflang="fr" data-title="Population" data-language-autonym="Français" data-language-local-name="franska" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-frp mw-list-item"><a href="https://frp.wikipedia.org/wiki/Populacion" title="Populacion – Arpitan" lang="frp" hreflang="frp" data-title="Populacion" data-language-autonym="Arpetan" data-language-local-name="Arpitan" class="interlanguage-link-target"><span>Arpetan</span></a></li><li class="interlanguage-link interwiki-fy mw-list-item"><a href="https://fy.wikipedia.org/wiki/Populaasje_(biology)" title="Populaasje (biology) – vesturfrísneska" lang="fy" hreflang="fy" data-title="Populaasje (biology)" data-language-autonym="Frysk" data-language-local-name="vesturfrísneska" class="interlanguage-link-target"><span>Frysk</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Pobal_(Bitheola%C3%ADocht)" title="Pobal (Bitheolaíocht) – írska" lang="ga" hreflang="ga" data-title="Pobal (Bitheolaíocht)" data-language-autonym="Gaeilge" data-language-local-name="írska" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Poboaci%C3%B3n_(biolox%C3%ADa)" title="Poboación (bioloxía) – galisíska" lang="gl" hreflang="gl" data-title="Poboación (bioloxía)" data-language-autonym="Galego" data-language-local-name="galisíska" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%90%D7%95%D7%9B%D7%9C%D7%95%D7%A1%D7%99%D7%99%D7%94" title="אוכלוסייה – hebreska" lang="he" hreflang="he" data-title="אוכלוסייה" data-language-autonym="עברית" data-language-local-name="hebreska" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Populacija_(biologija)" title="Populacija (biologija) – króatíska" lang="hr" hreflang="hr" data-title="Populacija (biologija)" data-language-autonym="Hrvatski" data-language-local-name="króatíska" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Popul%C3%A1ci%C3%B3" title="Populáció – ungverska" lang="hu" hreflang="hu" data-title="Populáció" data-language-autonym="Magyar" data-language-local-name="ungverska" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%8A%D5%B8%D5%BA%D5%B8%D6%82%D5%AC%D5%B5%D5%A1%D6%81%D5%AB%D5%A1" title="Պոպուլյացիա – armenska" lang="hy" hreflang="hy" data-title="Պոպուլյացիա" data-language-autonym="Հայերեն" data-language-local-name="armenska" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Populasi_(biologi)" title="Populasi (biologi) – indónesíska" lang="id" hreflang="id" data-title="Populasi (biologi)" data-language-autonym="Bahasa Indonesia" data-language-local-name="indónesíska" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E5%80%8B%E4%BD%93%E7%BE%A4" title="個体群 – japanska" lang="ja" hreflang="ja" data-title="個体群" data-language-autonym="日本語" data-language-local-name="japanska" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-jv mw-list-item"><a href="https://jv.wikipedia.org/wiki/Cacah_jiwa" title="Cacah jiwa – javanska" lang="jv" hreflang="jv" data-title="Cacah jiwa" data-language-autonym="Jawa" data-language-local-name="javanska" class="interlanguage-link-target"><span>Jawa</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%9E%E1%83%9D%E1%83%9E%E1%83%A3%E1%83%9A%E1%83%90%E1%83%AA%E1%83%98%E1%83%90" title="პოპულაცია – georgíska" lang="ka" hreflang="ka" data-title="პოპულაცია" data-language-autonym="ქართული" data-language-local-name="georgíska" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%9F%D0%BE%D0%BF%D1%83%D0%BB%D1%8F%D1%86%D0%B8%D1%8F" title="Популяция – kasakska" lang="kk" hreflang="kk" data-title="Популяция" data-language-autonym="Қазақша" data-language-local-name="kasakska" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EA%B0%9C%EC%B2%B4%EA%B5%B0" title="개체군 – kóreska" lang="ko" hreflang="ko" data-title="개체군" data-language-autonym="한국어" data-language-local-name="kóreska" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/%D0%9F%D0%BE%D0%BF%D1%83%D0%BB%D1%8F%D1%86%D0%B8%D1%8F" title="Популяция – kirgiska" lang="ky" hreflang="ky" data-title="Популяция" data-language-autonym="Кыргызча" data-language-local-name="kirgiska" class="interlanguage-link-target"><span>Кыргызча</span></a></li><li class="interlanguage-link interwiki-li mw-list-item"><a href="https://li.wikipedia.org/wiki/Populatie_(biologie)" title="Populatie (biologie) – limbúrgíska" lang="li" hreflang="li" data-title="Populatie (biologie)" data-language-autonym="Limburgs" data-language-local-name="limbúrgíska" class="interlanguage-link-target"><span>Limburgs</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Populasi_(biologi)" title="Populasi (biologi) – malaíska" lang="ms" hreflang="ms" data-title="Populasi (biologi)" data-language-autonym="Bahasa Melayu" data-language-local-name="malaíska" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-new mw-list-item"><a href="https://new.wikipedia.org/wiki/%E0%A4%AE%E0%A4%BF%E0%A4%B2%E0%A5%8D%E0%A4%AF%E0%A4%BE%E0%A4%83" title="मिल्याः – nevarí" lang="new" hreflang="new" data-title="मिल्याः" data-language-autonym="नेपाल भाषा" data-language-local-name="nevarí" class="interlanguage-link-target"><span>नेपाल भाषा</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Populatie_(biologie)" title="Populatie (biologie) – hollenska" lang="nl" hreflang="nl" data-title="Populatie (biologie)" data-language-autonym="Nederlands" data-language-local-name="hollenska" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Bestand" title="Bestand – nýnorska" lang="nn" hreflang="nn" data-title="Bestand" data-language-autonym="Norsk nynorsk" data-language-local-name="nýnorska" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Populasjon" title="Populasjon – norskt bókmál" lang="nb" hreflang="nb" data-title="Populasjon" data-language-autonym="Norsk bokmål" data-language-local-name="norskt bókmál" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pap mw-list-item"><a href="https://pap.wikipedia.org/wiki/Poblashon" title="Poblashon – papíamentó" lang="pap" hreflang="pap" data-title="Poblashon" data-language-autonym="Papiamentu" data-language-local-name="papíamentó" class="interlanguage-link-target"><span>Papiamentu</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Populacja_(biologia)" title="Populacja (biologia) – pólska" lang="pl" hreflang="pl" data-title="Populacja (biologia)" data-language-autonym="Polski" data-language-local-name="pólska" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Popula%C3%A7%C3%A3o_(biologia)" title="População (biologia) – portúgalska" lang="pt" hreflang="pt" data-title="População (biologia)" data-language-autonym="Português" data-language-local-name="portúgalska" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-roa-rup mw-list-item"><a href="https://roa-rup.wikipedia.org/wiki/Populatsia" title="Populatsia – arúmenska" lang="rup" hreflang="rup" data-title="Populatsia" data-language-autonym="Armãneashti" data-language-local-name="arúmenska" class="interlanguage-link-target"><span>Armãneashti</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9F%D0%BE%D0%BF%D1%83%D0%BB%D1%8F%D1%86%D0%B8%D1%8F" title="Популяция – rússneska" lang="ru" hreflang="ru" data-title="Популяция" data-language-autonym="Русский" data-language-local-name="rússneska" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Populacija_(biologija)" title="Populacija (biologija) – serbókróatíska" lang="sh" hreflang="sh" data-title="Populacija (biologija)" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="serbókróatíska" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Popul%C3%A1cia_(biol%C3%B3gia)" title="Populácia (biológia) – slóvakíska" lang="sk" hreflang="sk" data-title="Populácia (biológia)" data-language-autonym="Slovenčina" data-language-local-name="slóvakíska" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Populacija_(biologija)" title="Populacija (biologija) – slóvenska" lang="sl" hreflang="sl" data-title="Populacija (biologija)" data-language-autonym="Slovenščina" data-language-local-name="slóvenska" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Popullata" title="Popullata – albanska" lang="sq" hreflang="sq" data-title="Popullata" data-language-autonym="Shqip" data-language-local-name="albanska" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%9F%D0%BE%D0%BF%D1%83%D0%BB%D0%B0%D1%86%D0%B8%D1%98%D0%B0_(%D0%B1%D0%B8%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D1%98%D0%B0)" title="Популација (биологија) – serbneska" lang="sr" hreflang="sr" data-title="Популација (биологија)" data-language-autonym="Српски / srpski" data-language-local-name="serbneska" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Population" title="Population – sænska" lang="sv" hreflang="sv" data-title="Population" data-language-autonym="Svenska" data-language-local-name="sænska" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%87%E0%AE%A9%E0%AE%A4%E0%AF%8D%E0%AE%A4%E0%AF%8A%E0%AE%95%E0%AF%88" title="இனத்தொகை – tamílska" lang="ta" hreflang="ta" data-title="இனத்தொகை" data-language-autonym="தமிழ்" data-language-local-name="tamílska" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-te mw-list-item"><a href="https://te.wikipedia.org/wiki/%E0%B0%9C%E0%B0%A8%E0%B0%BE%E0%B0%AD%E0%B0%BE" title="జనాభా – telúgú" lang="te" hreflang="te" data-title="జనాభా" data-language-autonym="తెలుగు" data-language-local-name="telúgú" class="interlanguage-link-target"><span>తెలుగు</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Pop%C3%BClasyon_(biyoloji)" title="Popülasyon (biyoloji) – tyrkneska" lang="tr" hreflang="tr" data-title="Popülasyon (biyoloji)" data-language-autonym="Türkçe" data-language-local-name="tyrkneska" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-tw mw-list-item"><a href="https://tw.wikipedia.org/wiki/Nnipa_dodo%C9%94" title="Nnipa dodoɔ – tví" lang="tw" hreflang="tw" data-title="Nnipa dodoɔ" data-language-autonym="Twi" data-language-local-name="tví" class="interlanguage-link-target"><span>Twi</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9F%D0%BE%D0%BF%D1%83%D0%BB%D1%8F%D1%86%D1%96%D1%8F" title="Популяція – úkraínska" lang="uk" hreflang="uk" data-title="Популяція" data-language-autonym="Українська" data-language-local-name="úkraínska" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Populyatsiya" title="Populyatsiya – úsbekska" lang="uz" hreflang="uz" data-title="Populyatsiya" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="úsbekska" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Qu%E1%BA%A7n_th%E1%BB%83_(sinh_h%E1%BB%8Dc)" title="Quần thể (sinh học) – víetnamska" lang="vi" hreflang="vi" data-title="Quần thể (sinh học)" data-language-autonym="Tiếng Việt" data-language-local-name="víetnamska" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-wa mw-list-item"><a href="https://wa.wikipedia.org/wiki/Peupl%C3%A5cion" title="Peuplåcion – vallónska" lang="wa" hreflang="wa" data-title="Peuplåcion" data-language-autonym="Walon" data-language-local-name="vallónska" class="interlanguage-link-target"><span>Walon</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E7%A7%8D%E7%BE%A4" title="种群 – wu-kínverska" lang="wuu" hreflang="wuu" data-title="种群" data-language-autonym="吴语" data-language-local-name="wu-kínverska" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E7%A7%8D%E7%BE%A4" title="种群 – kínverska" lang="zh" hreflang="zh" data-title="种群" data-language-autonym="中文" data-language-local-name="kínverska" class="interlanguage-link-target"><span>中文</span></a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/K%C3%BBn-th%C3%A9" title="Kûn-thé – Minnan" lang="nan" hreflang="nan" data-title="Kûn-thé" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="Minnan" class="interlanguage-link-target"><span>閩南語 / Bân-lâm-gú</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E7%A8%AE%E7%BE%A4" title="種群 – kantónska" lang="yue" hreflang="yue" data-title="種群" data-language-autonym="粵語" data-language-local-name="kantónska" class="interlanguage-link-target"><span>粵語</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q2625603#sitelinks-wikipedia" title="Breyta tungumálatenglum" class="wbc-editpage">Breyta tenglum</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Nafnrými"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Stofn_(l%C3%ADffr%C3%A6%C3%B0i)" title="Sýna efnissíðuna [c]" accesskey="c"><span>Síða</span></a></li><li id="ca-talk" class="new vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Spjall:Stofn_(l%C3%ADffr%C3%A6%C3%B0i)&action=edit&redlink=1" rel="discussion" class="new" title="Spallsíða þessarar síðu (síða er ekki enn til) [t]" accesskey="t"><span>Spjall</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Breyta tungumálaafbrigði" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">íslenska</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Sýn"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Stofn_(l%C3%ADffr%C3%A6%C3%B0i)"><span>Lesa</span></a></li><li id="ca-ve-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Stofn_(l%C3%ADffr%C3%A6%C3%B0i)&veaction=edit" title="Breyta þessari síðu [v]" accesskey="v"><span>Breyta</span></a></li><li id="ca-edit" class="collapsible vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Stofn_(l%C3%ADffr%C3%A6%C3%B0i)&action=edit" title="Breyta frumkóða síðunnar [e]" accesskey="e"><span>Breyta frumkóða</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Stofn_(l%C3%ADffr%C3%A6%C3%B0i)&action=history" title="Eldri útgáfur af síðunni. 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vector-more-collapsible-item mw-list-item"><a href="/wiki/Stofn_(l%C3%ADffr%C3%A6%C3%B0i)"><span>Lesa</span></a></li><li id="ca-more-ve-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Stofn_(l%C3%ADffr%C3%A6%C3%B0i)&veaction=edit" title="Breyta þessari síðu [v]" accesskey="v"><span>Breyta</span></a></li><li id="ca-more-edit" class="collapsible vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Stofn_(l%C3%ADffr%C3%A6%C3%B0i)&action=edit" title="Breyta frumkóða síðunnar [e]" accesskey="e"><span>Breyta frumkóða</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Stofn_(l%C3%ADffr%C3%A6%C3%B0i)&action=history"><span>Breytingaskrá</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> Almennt </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Kerfiss%C3%AD%C3%B0a:S%C3%AD%C3%B0ur_sem_tengjast_hinga%C3%B0/Stofn_(l%C3%ADffr%C3%A6%C3%B0i)" title="Listi yfir síður sem tengjast í þessa [j]" accesskey="j"><span>Hvað tengist hingað</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Kerfiss%C3%AD%C3%B0a:N%C3%BDlegar_breytingar_tengdar/Stofn_(l%C3%ADffr%C3%A6%C3%B0i)" rel="nofollow" title="Nýlegar breytingar á ítengdum síðum [k]" accesskey="k"><span>Skyldar breytingar</span></a></li><li id="t-upload" class="mw-list-item"><a href="/wiki/Wikipedia:Hlaða_inn_skrá" title="Hlaða inn skrám [u]" accesskey="u"><span>Hlaða inn skrá</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Kerfiss%C3%AD%C3%B0a:Kerfiss%C3%AD%C3%B0ur" title="Listi yfir kerfissíður [q]" accesskey="q"><span>Kerfissíður</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Stofn_(l%C3%ADffr%C3%A6%C3%B0i)&oldid=1809826" title="Varanlegur tengill í þessa útgáfu síðunnar"><span>Varanlegur tengill</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Stofn_(l%C3%ADffr%C3%A6%C3%B0i)&action=info" title="Frekari upplýsingar um þessa síðu"><span>Síðuupplýsingar</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Kerfiss%C3%AD%C3%B0a:CiteThisPage&page=Stofn_%28l%C3%ADffr%C3%A6%C3%B0i%29&id=1809826&wpFormIdentifier=titleform" title="Upplýsingar um hvernig á að vitna í þessa síðu"><span>Vitna í þessa síðu</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Kerfiss%C3%AD%C3%B0a:UrlShortener&url=https%3A%2F%2Fis.wikipedia.org%2Fwiki%2FStofn_%28l%25C3%25ADffr%25C3%25A6%25C3%25B0i%29"><span>Fá styttan tengil</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Kerfiss%C3%AD%C3%B0a:QrCode&url=https%3A%2F%2Fis.wikipedia.org%2Fwiki%2FStofn_%28l%25C3%25ADffr%25C3%25A6%25C3%25B0i%29"><span>Niðurhlaða QR-kóða</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Prenta/flytja út </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-create_a_book" class="mw-list-item"><a href="/w/index.php?title=Kerfiss%C3%AD%C3%B0a:Book&bookcmd=book_creator&referer=Stofn+%28l%C3%ADffr%C3%A6%C3%B0i%29"><span>Búa til bók</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Kerfiss%C3%AD%C3%B0a:DownloadAsPdf&page=Stofn_%28l%C3%ADffr%C3%A6%C3%B0i%29&action=show-download-screen"><span>Sækja sem PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Stofn_(l%C3%ADffr%C3%A6%C3%B0i)&printable=yes" title="Prentanleg útgáfa af þessari síðu [p]" accesskey="p"><span>Prentvæn útgáfa</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> Í öðrum verkefnum </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q2625603" title="Tengill á tengdan hlut í gagnagrunni [g]" accesskey="g"><span>Wikidata hlutur</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Síðuverkfæri"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Útlit"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Útlit</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">færa í hliðarstiku</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">fela</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">Úr Wikipediu, frjálsa alfræðiritinu</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="is" dir="ltr"><figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/Mynd:Antilope-cervicapra-4.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/15/Antilope-cervicapra-4.jpg/220px-Antilope-cervicapra-4.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/15/Antilope-cervicapra-4.jpg/330px-Antilope-cervicapra-4.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/15/Antilope-cervicapra-4.jpg/440px-Antilope-cervicapra-4.jpg 2x" data-file-width="2560" data-file-height="1920" /></a><figcaption>Antilópur af sama stofni.</figcaption></figure> <p><b>Stofn</b> er hópur <a href="/wiki/L%C3%ADfvera" title="Lífvera">lífvera</a> af sömu <a href="/wiki/Tegund_(l%C3%ADffr%C3%A6%C3%B0i)" title="Tegund (líffræði)">tegund</a> sem lifa á afmörkuðu svæði. Í hverju <a href="/wiki/Vistkerfi" title="Vistkerfi">vistkerfi</a> komast þær lífverur helst af sem hafa lagað sig best að umhverfi sínu. Allir refir sem lifa á tilteknu svæði mynda stofn og öll birkitré í skógi mynda stofn. Allar lífverur í heiminum eru hluti af einhverjum stofni og þá sjaldan færri en tveim í einu. </p><p>Umhverfið hefur áhrif á eiginleika stofnsins. Þannig <a href="/wiki/N%C3%A1tt%C3%BAruval" title="Náttúruval">veljast úr</a> ákveðnir eiginleikar sem hjálpa lífverunni að lifa af. Það fer eftir umhverfinu hvaða eiginleiki gefur forskot. Þannig getur t.d. litur sem fellur betur inn í umhverfið hjálpað ákveðnum einstaklingum innan stofnsins að lifa af. Þeir sem ekki eru í góðum felulitum eru frekar veiddir af rándýrum og ná ekki að koma upp afkvæmum sem erfa litinn. Afkvæmum fjölgar sem hafa góðan felulit og þannig verður sá litur ríkjandi innan stofnsins og með tímanum jafnvel eini liturinn. Þetta kallast <a href="/w/index.php?title=A%C3%B0l%C3%B6gun_(l%C3%ADffr%C3%A6%C3%B0i)&action=edit&redlink=1" class="new" title="Aðlögun (líffræði) (síða er ekki enn til)">aðlögun</a>. </p><p>Lífverur af sömu tegund geta átt saman frjó afkvæmi. Á mjög löngum tíma fer breytileikinn á milli stofna að verða það mikill að þeir geta ekki lengur átt saman frjó afkvæmi. Þá er komin sitt hvor <a href="/wiki/Tegund_(l%C3%ADffr%C3%A6%C3%B0i)" title="Tegund (líffræði)">tegundin</a> sem á sama forföður.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> Aðlögun stofna að umhverfi sínu er þannig ein af undirstöðum <a href="/wiki/%C3%9Er%C3%B3un" title="Þróun">þróunar</a> nýrra tegunda. </p><p>Erfðafræðilegur breytileiki innan stofns hefur áhrif á möguleika stofnsins að lifa af. Því stærri sem genapollurinn er þeim mun líklegra er að fleiri einstaklingar innan stofnsins lifi af þær áskoranir sem er að finna í umhverfinu (rándýr, sjúkdóma, fæðuskort, veðurfar o.s.frv.). <a href="/w/index.php?title=Innr%C3%A6ktun&action=edit&redlink=1" class="new" title="Innræktun (síða er ekki enn til)">Innræktun</a> hefur áhrif á að breytileikinn verði minni og genapollurinn minnkar. Það eykur líkur á því að stofninn deyi út. Innræktun er þegar skyldir einstaklingar eignast saman afkvæmi. </p> <div class="mw-heading mw-heading2"><h2 id="Tilvísanir"><span id="Tilv.C3.ADsanir"></span>Tilvísanir</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Stofn_(l%C3%ADffr%C3%A6%C3%B0i)&veaction=edit&section=1" title="Breyti hluta: Tilvísanir" class="mw-editsection-visualeditor"><span>breyta</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Stofn_(l%C3%ADffr%C3%A6%C3%B0i)&action=edit&section=1" title="Edit section's source code: Tilvísanir"><span>breyta frumkóða</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1744314">.mw-parser-output .reflist{font-size:90%;margin-bottom:0.5em;list-style-type:decimal}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1870430">.mw-parser-output .citation a.new{color:black}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .citation a.new{color:white}}@media screen{html.skin-theme-clientpref-night .mw-parser-output .citation a.new{color:white}}.mw-parser-output .citation{word-wrap:break-word}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}</style><style data-mw-deduplicate="TemplateStyles:r1873994">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free a,.mw-parser-output .citation .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited a,.mw-parser-output .id-lock-registration a,.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription a,.mw-parser-output .citation .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:#d33}.mw-parser-output .cs1-visible-error{color:#d33}.mw-parser-output .cs1-maint{display:none;color:#2C882D;margin-left:0.3em}.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911F}html.skin-theme-clientpref-night .mw-parser-output .cs1-visible-error,html.skin-theme-clientpref-night .mw-parser-output .cs1-hidden-error{color:#f8a397}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-visible-error,html.skin-theme-clientpref-os .mw-parser-output .cs1-hidden-error{color:#f8a397}html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911F}}</style><cite id="CITEREFFabricius,_S._ofl." class="citation book cs1">Fabricius, S. ofl. (2011). <i>Maður og náttúra</i>. Hálfdán Ómar Hálfdánarson þýddi og staðfærði. Reykjavík. Menntamálastofnun.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Ma%C3%B0ur+og+n%C3%A1tt%C3%BAra&rft.pub=H%C3%A1lfd%C3%A1n+%C3%93mar+H%C3%A1lfd%C3%A1narson+%C3%BE%C3%BDddi+og+sta%C3%B0f%C3%A6r%C3%B0i.+Reykjav%C3%ADk.+Menntam%C3%A1lastofnun.&rft.au=Fabricius%2C+S.+ofl.&rfr_id=info%3Asid%2Fis.wikipedia.org%3AStofn+%28l%C3%ADffr%C3%A6%C3%B0i%29" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><a href="#cite_ref-2">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1870430"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1873994"><cite id="CITEREFHurd_D." class="citation book cs1">Hurd D.; og fleiri (1996). <i>Einkenni lífvera</i>. Hálfdán Ómar Hálfdánarson og Þuríður Þorbjarnardóttir þýddu og staðfærðu. Reykjavík. Námsgagnastofnun.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Einkenni+l%C3%ADfvera.&rft.pub=H%C3%A1lfd%C3%A1n+%C3%93mar+H%C3%A1lfd%C3%A1narson+og+%C3%9Eur%C3%AD%C3%B0ur+%C3%9Eorbjarnard%C3%B3ttir+%C3%BE%C3%BDddu+og+sta%C3%B0f%C3%A6r%C3%B0u.+Reykjav%C3%ADk.+N%C3%A1msgagnastofnun.&rft.au=Hurd+D.&rfr_id=info%3Asid%2Fis.wikipedia.org%3AStofn+%28l%C3%ADffr%C3%A6%C3%B0i%29" class="Z3988"></span></span> </li> </ol></div></div><style data-mw-deduplicate="TemplateStyles:r1744436">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}</style> <style data-mw-deduplicate="TemplateStyles:r1870435">.mw-parser-output .t-stub{clear:both;background-color:#f9f9f9;border:1px solid #aaa;padding:5px;padding-left:10px;text-align:left;font-size:90%;margin-top:1em;color:black}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .t-stub{background-color:#0f0f0f;color:white}}@media screen{html.skin-theme-clientpref-night .mw-parser-output .t-stub{background-color:#0f0f0f;color:white}}</style><div class="t-stub"><span typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Blue_morpho_butterfly.jpg/33px-Blue_morpho_butterfly.jpg" decoding="async" width="33" height="30" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Blue_morpho_butterfly.jpg/50px-Blue_morpho_butterfly.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/65/Blue_morpho_butterfly.jpg/66px-Blue_morpho_butterfly.jpg 2x" data-file-width="807" data-file-height="730" /></span></span>  <i>Þessi <a href="/wiki/L%C3%ADffr%C3%A6%C3%B0i" title="Líffræði">líffræði</a>grein er <a href="/wiki/Wikipedia:Stubbur" title="Wikipedia:Stubbur">stubbur</a>. Þú getur hjálpað til með því að <span class="plainlinks"><a class="external text" href="https://is.wikipedia.org/w/index.php?title=Stofn_(l%C3%ADffr%C3%A6%C3%B0i)&veaction=edit">bæta við greinina</a></span>.</i></div> <!-- NewPP limit report Parsed by mw‐web.codfw.main‐6b786b4b4d‐zvkcb Cached time: 20241118234356 Cache expiry: 2592000 Reduced expiry: false Complications: [] CPU time usage: 0.141 seconds Real time usage: 0.192 seconds Preprocessor visited node count: 1510/1000000 Post‐expand include size: 8193/2097152 bytes Template argument size: 1552/2097152 bytes Highest expansion depth: 10/100 Expensive parser function count: 0/500 Unstrip recursion depth: 1/20 Unstrip post‐expand size: 9167/5000000 bytes Lua time usage: 0.064/10.000 seconds Lua memory usage: 2832180/52428800 bytes Number of Wikibase entities loaded: 0/400 --> <!-- Transclusion expansion time report (%,ms,calls,template) 100.00% 166.494 1 -total 85.08% 141.654 1 Snið:Reflist 63.06% 104.987 2 Snið:Bókaheimild 61.32% 102.099 2 Snið:Cite_book 14.84% 24.714 1 Snið:Stubbur 4.77% 7.934 2 Snið:Replace 1.52% 2.533 1 Snið:Main_other --> <!-- Saved in parser cache with key iswiki:pcache:idhash:61030-0!canonical and timestamp 20241118234356 and revision id 1809826. 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