CINXE.COM

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html lang="en" dir="ltr" xml:lang="en" xmlns="https://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <link rel="canonical" href="https://www.WikiTree.com/wiki/Help:DNA_Test_Connections"/> <title>Help:DNA Test Connections</title> <meta name="keywords" content="Help:DNA Test Connections - WikiTree"/> <link rel="shortcut icon" href="/favicon.ico"/> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <link rel="preload" href="https://fonts.gstatic.com/s/opensans/v20/mem8YaGs126MiZpBA-UFVZ0b.woff2" as="font" crossorigin> <link rel="preload" href="https://fonts.gstatic.com/s/opensans/v20/mem5YaGs126MiZpBA-UN7rgOUuhp.woff2" as="font" crossorigin> <link rel="preload" href="https://fonts.gstatic.com/s/opensans/v20/mem5YaGs126MiZpBA-UN7rgOXOhpOqc.woff2" as="font" crossorigin> <link rel="preload" href="https://fonts.gstatic.com/s/opensans/v20/mem8YaGs126MiZpBA-UFW50bbck.woff2" as="font" crossorigin> <link rel="stylesheet" href="/css/A.base.css+comment.css+skeleton.css+skeleton-wide.css+layout.css+copyWidget.css+splide.min.css,Mcc.iPSRImGwNe.css.pagespeed.cf.ftGqmtn590.css"/>  <link href='//fonts.googleapis.com/css?family=Open+Sans:400,700&display=swap' rel='stylesheet' type='text/css'>  <script src="//ajax.googleapis.com/ajax/libs/jquery/3.7.0/jquery.min.js"></script>  <script src="/skins/wikitree/jquery.placeholder.js+jquery.timeago.js.pagespeed.jc.vrzc0nnmQK.js"></script><script>eval(mod_pagespeed_oX_Nuq9_VX);</script> <script>eval(mod_pagespeed_tMK3ULznBI);</script> <script>$(document).ready(function(){$('input, textarea').placeholder();$("time.timeago").timeago();});</script>  <script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-N7J37T8M');</script>  <script type="text/javascript">//<![CDATA[ var skin="wikitree";var stylepath="/skins";var wgArticlePath="/wiki/$1";var wgScriptPath="";var wgScript="/index.php";var wgServer="https://www.wikitree.com";var wgCanonicalNamespace="Help";var wgCanonicalSpecialPageName=false;var wgNamespaceNumber=12;var wgPageName="Help:DNA_Test_Connections";var wgTitle="DNA Test Connections";var wgAction="view";var wgRestrictionEdit=[];var wgRestrictionMove=[];var wgArticleId="19025340";var wgIsArticle=true;var wgUserName=null;var wgUserGroups=null;var wgUserLanguage="en";var wgContentLanguage="en";var wgBreakFrames=false;var wgCurRevisionId="180602552"; //]]></script> <script src="/skins/common/wikibits.js,q109.pagespeed.jm.E782dqsMEn.js"></script>  <script src="/skins/common,_ajax.js,q109+wikitree,_categorySuggestion.js.pagespeed.jc.Cnkg7hsjO0.js"></script><script>eval(mod_pagespeed_TVIPXVZ8bQ);</script> <script>eval(mod_pagespeed_2Jx96esIMU);</script> </head> <body class="mediawiki ns-12 ltr page-Help_DNA_Test_Connections">  <noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-N7J37T8M" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>  <div class="wrapper" itemprop="mainEntity" itemscope itemtype="https://schema.org/Person"> <div id="header"> <div class="sixteen columns full-width header"> <div class="login"><a href="/index.php?title=Special:Userlogin">login</a></div> <div class="logo"><a class="nohover" href="/"><img src="/images/wikitree-small.png.pagespeed.ce.5G9g5z_Ayb.png" width="250" height="42" border="0" alt="WikiTree: Where genealogists collaborate" title="WikiTree: Where genealogists collaborate"/></a></div> <div class="search"><form action="/wiki/Special:SearchPerson" method="POST" style="margin-bottom: 0px;"><input type=text name="wpFirst" size="8" placeholder="First Name" style="margin-bottom: 2px;"> <input type=text name="wpLast" size="8" placeholder="Last Name" style="margin-bottom: 2px;"> <input type=submit name="wpSearch" value="Search" style="top: 0px;"></form></div> </div> </div> <div id="content" class="container"> <div class="sixteen columns"> <h1>Help:DNA Test Connections </h1> <div class="green box rounded row" style="width:320px; margin:0 0 10px 10px; float:right;"> <form action="/wiki/Special:SearchPages" method="POST" style="margin-bottom: 0px;"> <a href="/wiki/Special:SearchPages" title="Click here for our main help search page">Search</a> WikiTree's <a href="/wiki/Category:WikiTree_Help" title="Click here to browse WikiTree's help pages instead of searching them">help pages</a>:<br/> <input type="text" name="keywords" size="25" placeholder="Help page keywords" value="" style="width:200px;"/> <input type="submit" name="pageSearch" value="Go"/> </form> </div> <p>Categories: <span dir='ltr'><a href="/wiki/Category:WikiTree_Help" title="Category:WikiTree Help">WikiTree Help</a></span> | <span dir='ltr'><a href="/wiki/Category:DNA_Help" title="Category:DNA Help">DNA Help</a></span> | <span dir='ltr'><a href="/wiki/Category:WikiTree_Tools_and_Apps" title="Category:WikiTree Tools and Apps">WikiTree Tools and Apps</a></span></p> <div>Language: <strong class="selflink">en</strong> | <a href="/wiki/Help:De:DNA-Test-Verbindungen" title="Help:De:DNA-Test-Verbindungen">de</a> | <a href="/wiki/Help:Nl:DNA_Test_Connecties" title="Help:Nl:DNA Test Connecties">nl</a></div> <p><span id="summary" class="large">Over <b>30%</b> of the profiles on our <a href="/wiki/Help:Collaborative_Family_Tree" title="Help:Collaborative Family Tree">shared tree</a> now have DNA test connections! Here is what they mean.</span> </p> <table id="toc" class="toc" summary="Contents"><tr><td><div id="toctitle"><h2>Contents</h2></div> <ul> <li class="toclevel-1"><a href="#What_is_a_DNA_Test_Connection.3F"><span class="tocnumber">1</span> <span class="toctext">What is a DNA Test Connection?</span></a></li> <li class="toclevel-1"><a href="#What_Profiles_Get_Connected_to_Your_Test.3F"><span class="tocnumber">2</span> <span class="toctext">What Profiles Get Connected to Your Test?</span></a></li> <li class="toclevel-1"><a href="#Percentages_of_Shared_DNA"><span class="tocnumber">3</span> <span class="toctext">Percentages of Shared DNA</span></a> <ul> <li class="toclevel-2"><a href="#X-chromosome_percentages"><span class="tocnumber">3.1</span> <span class="toctext">X-chromosome percentages</span></a></li> </ul> </li> <li class="toclevel-1"><a href="#Connections_for_Surnames"><span class="tocnumber">4</span> <span class="toctext">Connections for Surnames</span></a></li> <li class="toclevel-1"><a href="#Allow_24_Hours_for_New_Connections"><span class="tocnumber">5</span> <span class="toctext">Allow 24 Hours for New Connections</span></a></li> </ul> </td></tr></table><script type="text/javascript">if(window.showTocToggle){var tocShowText="show";var tocHideText="hide";showTocToggle();}</script> <a name="What_is_a_DNA_Test_Connection.3F"></a><h2> <span class="mw-headline"> What is a DNA Test Connection? </span></h2> <div class="green box" style="float:right; margin:10px;">See <a href="/wiki/Help:How_to_Get_Started_with_DNA" title="Help:How to Get Started with DNA">How to Get Started with DNA</a></div> <p>A DNA test connection is a notice on a WikiTree <a href="/wiki/Help:Person_Profile" title="Help:Person Profile">profile</a> that someone has taken a <a href="/wiki/Help:DNA_Tests" title="Help:DNA Tests">DNA test</a> which might be helpful for <a href="/wiki/Help:DNA_Confirmation" title="Help:DNA Confirmation">confirming</a> or rejecting relationships to that person (see an <a href="/wiki/Roberts-7102" title="Roberts-7102">example</a>). </p><p>Essentially, a test connection is an opportunity to try to scientifically prove or disprove what's been established through traditional genealogy. </p><p>This is something that can only be done on a <a href="/wiki/Help:Collaborative_Family_Tree" title="Help:Collaborative Family Tree">single family tree</a> where we all collaborate on the same ancestor profiles. Our system is unique to WikiTree and: </p> <ol><li> helps genealogists discover and confirm their ancestors, and </li><li> helps WikiTree's mission to grow an <i>accurate</i> single family tree. </li></ol> <p>Test connections include paternal or maternal haplogroups<sup id="_ref-0" class="reference"><a href="#_note-0" title="">[1]</a></sup> along with <a href="/wiki/Help:GEDMatch" title="Help:GEDMatch">GEDmatch</a> IDs with <a href="/wiki/Help:DNA_Comparison" title="Help:DNA Comparison">easy comparison links</a> and other useful information. </p> <a name="What_Profiles_Get_Connected_to_Your_Test.3F"></a><h2> <span class="mw-headline"> What Profiles Get Connected to Your Test? </span></h2> <ul><li> <b><a href="/wiki/Help:Autosomal_DNA_Tests" title="Help:Autosomal DNA Tests">Autosomal</a></b>: If you've taken a <a href="https://refer.23andme.com/s/kmbyk" class="external text" title="https://refer.23andme.com/s/kmbyk" rel="nofollow">23andMe</a>, <a href="https://click.linksynergy.com/deeplink?id=Xib7NfnK11s&mid=50138&murl=https%3A%2F%2Fwww.ancestry.com%2Fdna" class="external text" title="https://click.linksynergy.com/deeplink?id=Xib7NfnK11s&mid=50138&murl=https%3A%2F%2Fwww.ancestry.com%2Fdna" rel="nofollow">AncestryDNA</a>, <a href="http://www.tkqlhce.com/click-3382244-13710348" class="external text" title="http://www.tkqlhce.com/click-3382244-13710348" rel="nofollow">Family Tree DNA</a> Family Finder, <a href="http://www.myheritage.com/dna?utm_source=partner_wikitree&utm_medium=partner&utm_campaign=wikitree_nov16_dnasale&tr_funnel=mh+dna" class="external text" title="http://www.myheritage.com/dna?utm_source=partner_wikitree&utm_medium=partner&utm_campaign=wikitree_nov16_dnasale&tr_funnel=mh+dna" rel="nofollow">MyHeritageDNA</a>, or <a href="http://www.tkqlhce.com/click-3382244-12748243" class="external text" title="http://www.tkqlhce.com/click-3382244-12748243" rel="nofollow">Living DNA</a> test we connect this fact to all your blood relatives out to eight degrees<sup id="_ref-1" class="reference"><a href="#_note-1" title="">[2]</a></sup> of separation — up to sixth great grandparents and out to third cousins. </li></ul> <ul><li> <b><a href="/wiki/Help:Y-Chromosome_DNA_Tests" title="Help:Y-Chromosome DNA Tests">Y-Chromosome</a></b>: If a male on WikiTree has taken a Y-chromosome DNA test we go all the way up the direct paternal line, father-to-father, to find the test-taker's earliest-known paternal grandfather. Then, starting with this earliest-known paternal grandfather, we go down all the direct male lines, not just the test-taker's own line. The system includes all sons and skips all daughters and profiles without a specified <a href="/wiki/Help:Sex_and_Gender" title="Help:Sex and Gender">Sex at Birth</a>. </li></ul> <ul><li> <b><a href="/wiki/Help:Mitochondrial_DNA_Tests" title="Help:Mitochondrial DNA Tests">Mitochondrial</a></b>: If a male or female on WikiTree has taken a mitochondrial DNA test we will go up the direct maternal line, mother-to-mother, to find the test-takers's earliest-known maternal grandmother. We then include all the children, male and female, of this earliest-known direct-line maternal grandmother. Then we take the daughters gathered in the previous step and add all her children, male and female. We repeat this down through all the generations. In every generation, all children are included, but only the children of daughters are included in the next generation. This is the same as what you see on the earliest-known maternal grandmother's <a href="/wiki/Help:DNA_Descendants" title="Help:DNA Descendants">DNA Descendants page</a> in the mitochondrial section. </li></ul> <a name="Percentages_of_Shared_DNA"></a><h2> <span class="mw-headline"> Percentages of Shared DNA </span></h2> <p>Autosomal DNA test connections include average expected percentages of shared DNA between the profiled person and the test-taker. You will see these percentage numbers on any profile with autosomal connections [<a href="/wiki/Roberts-7085" title="Roberts-7085">example</a>]. </p><p>Any number you see below 50% is <b>only an average</b> based on relationships and patterns of inheritance. </p><p>We inherit <i>exactly 50%</i> of our autosomal DNA from our mother and 50% from our father. We get one set of chromosomes from each of our biological parents. But beyond our parents, the inheritance is random. </p><p>Since each one of our parents also inherited <i>exactly 50%</i> of their autosomal DNA from each of their parents we can estimate that we will have inherited <i>about 25%</i> of our DNA from each one of our grandparents. We don't know the <i>actual percentage</i> we inherit from our grandparents because the DNA we inherit for our parents is a randomly shuffled mixture of the DNA they inherited from their parents. </p><p>For more on this topic, see the <a href="https://isogg.org/wiki/Autosomal_DNA_statistics" class="external text" title="https://isogg.org/wiki/Autosomal_DNA_statistics" rel="nofollow">Autosomal DNA statistics</a> page on the International Society of Genetic Genealogy Wiki, and our <a href="https://www.wikitree.com/g2g/1137594/did-you-see-the-new-dna-percentages" class="external text" title="https://www.wikitree.com/g2g/1137594/did-you-see-the-new-dna-percentages" rel="nofollow">discussion in G2G</a>. </p> <a name="X-chromosome_percentages"></a><h3> <span class="mw-headline"> X-chromosome percentages </span></h3> <p>If the test-taker is expected to match the profiled person on the X chromosome, an X percentage is included after the autosomal percentage. </p><p>The X percentages are significantly less reliable than the autosomal percentages. For more information, see <a href="http://smithplanet.com/stuff/x-chromosome.htm" class="external text" title="http://smithplanet.com/stuff/x-chromosome.htm" rel="nofollow">X Chromosome Recombination's Impact on DNA Genealogy</a> by Jared Smith. </p> <a name="Connections_for_Surnames"></a><h2> <span class="mw-headline"> Connections for Surnames </span></h2> <p>You can see all the people on WikiTree with a given last name who have DNA test connections. This can be very helpful for surname studies. </p><p>For example, see <a href="https://www.wikitree.com/index.php?title=Special:DNATests&s=ADAMS" class="external text" title="https://www.wikitree.com/index.php?title=Special:DNATests&s=ADAMS" rel="nofollow">Adams DNA Connections</a>. Enter your own surname in the search form on that page. </p> <a name="Allow_24_Hours_for_New_Connections"></a><h2> <span class="mw-headline"> Allow 24 Hours for New Connections </span></h2> <p>To get the test connection process started all you have to do is <a href="/wiki/Special:DNATests" title="Special:DNATests">say that you have taken a DNA test</a>. WikiTree does the rest. </p><p>The connections are made automatically, but not instantly. It may take up to 24 hours for tests to connect. It also takes up to 24 hours for test connections to be removed when family relationships are changed. </p><p><br/> </p> <hr/> <ol class="references"><li id="_note-0"><a href="#_ref-0" title="">↑</a> In the future, we hope to automatically alert members when haplogroups that should match conflict. Automatic detection of haplogroup conflict will be difficult for the foreseeable future because of the inconsistent naming of haplogroups and changing of haplogroup labels through time. This would require more technical sophistication in the programs and/or users. In the meantime, if a haplotype comparison chart exists on the Web then it can be linked from the note field. For example, see <a href="https://www.wikitree.com/index.php?title=Special:DNATests&u=6035205&id=8" class="external text" title="https://www.wikitree.com/index.php?title=Special:DNATests&u=6035205&id=8" rel="nofollow">Peter Roberts' Family Tree DNA yDNA test page</a>.</li> <li id="_note-1"><a href="#_ref-1" title="">↑</a> The testing company is likely to give you matches who are beyond third cousins. However, those cousins can't be reliably <i>expected</i> to share significant segments of your DNA. No autosomal test can definitively confirm or rule out a family relationship, but it would be unusual for second or third cousins to not share significant segments.</li></ol> <br/><br/> <p class="small" align="center"> This page was last modified 20:42, 30 August 2023. This page has been accessed 229,226 times.</p> </div> </div> <div class="container"> <div class="sixteen columns"> </div> </div> <div id="footer"> <div class="container"> <div class="sixteen columns"> <p><a href="/" title="Go to the WikiTree Home Page">WIKITREE HOME</a>   |   <a href="/wiki/Help:About_WikiTree" title="About WikiTree, the Community, and our Mission">ABOUT</a>   |   <a href="/g2g/" title="Genealogist-to-Genealogist Community Forum">G2G FORUM</a>   |   <a href="/wiki/Help:How_to_Use_WikiTree" title="Help: How to use WikiTree">HELP</a>   |   <a href="/wiki/Special:SearchPerson" title="Search for a Person">SEARCH</a></p> <p>IMPORTANT PRIVACY NOTICE & DISCLAIMER: YOU HAVE A RESPONSIBILITY TO USE CAUTION WHEN DISTRIBUTING PRIVATE INFORMATION. WIKITREE PROTECTS MOST SENSITIVE INFORMATION BUT ONLY TO THE EXTENT STATED IN THE <a href="/about/terms.html" title="View of our official Terms of Service"><u>TERMS OF SERVICE</u></a> AND <a href="/wiki/Help:Privacy_Policy" title="View our official Privacy Policy"><u>PRIVACY POLICY</u></a>.</p> <p>© 2008 - 2023 INTERESTING.COM, INC. CONTENT MAY BE COPYRIGHTED BY WIKITREE COMMUNITY MEMBERS.</p> </div> </div> </div> </div>  <script type="text/javascript">if(window.runOnloadHook)runOnloadHook();</script> <script src="https://apis.google.com/js/platform.js" async defer></script> <script src="/skins/wikitree/JS,_referralLinks.js+jquery.hoverIntent.min.js+pagePreview.js+JS,_copyWidget.js+JS,_popupInteractions.js+JS,_splide.min.js+JS,_ads.js.pagespeed.jc.xk-OWIHokz.js"></script><script>eval(mod_pagespeed_KypvEu7X2V);</script>  <script>eval(mod_pagespeed_AteF5fb8YI);</script> <script>eval(mod_pagespeed_V5kmfCm7Za);</script> <div id="pagePreview" style="display:none;position:absolute;z-index:9999;"></div> <script>eval(mod_pagespeed_IVwHten8SK);</script> <script>eval(mod_pagespeed_Xw9iliBNU0);</script> <script>eval(mod_pagespeed_DmrOJ3HlPO);</script>   <div id="myHeritageAPIToken" style="display:none;" data-token="2.cf835b40d09fafc7f43d33141cc0ab98.81de651acbd353d395b31ba7c41d0b87.1732850660.60.4225.907ea931f6ec6cbf6b1ef84b6bdf6beb"></div> <style type="text/css">.wtad{display:none;background-color:#fff;overflow:hidden}.wtad-border{border:2px solid #a5d167}.wtad-mhapi{width:590px;margin:1em auto 2em auto}.wtad-mhapi-inline{clear:both;width:728px;margin-left:auto;margin-right:auto;padding-top:5px;padding-bottom:5px}.wtad-mhapi-mobile{width:320px;margin-left:auto;margin-right:auto;border:2px solid #a5d167}.wtad-mhapi .sponsored,.wtad-mhapi-inline .sponsored{float:right;margin-right:5px}.wtad-mhapi .header{clear:both;text-align:left;padding:15px 25px}.wtad-mhapi h2,.wtad-mhapi-inline h2{font-weight:400;font-size:18px;margin:0;padding:0}.wtad-mhapi h3,.wtad-mhapi-inline h3{font-weight:400;font-size:15px;margin:0;padding:0}.wtad-mhapi .splide{clear:both;width:500px;margin-left:35px;margin-top:5px;padding:10px}.wtad-mhapi .splide__arrow--prev{margin-left:-50px}.wtad-mhapi .splide__arrow--next{margin-right:-50px}.wtad-mhapi .splide__list img{width:75px}.wtad-mhapi .footer{position:relative;clear:both;width:100%;padding:0 23px}.wtad-mhapi .footer input{width:150px}.wtad-mhapi .footer:before{content:"";position:absolute;width:100%;height:20px;top:0;left:0;background:linear-gradient(rgba(0,0,0,.1),rgba(0,0,0,0));opacity:.5}.wtad-mhapi-inline .row{margin-bottom:0}.wtad-mhapi-inline .splide{float:left;width:400px;border-left:1px solid #000;padding-left:5px;border-right:1px solid #000;padding-right:5px}.wtad-mhapi-inline .splide__track{width:325px;margin-left:35px}.wtad-mhapi-inline .header{float:left;width:180px;margin-top:auto;margin-bottom:auto;padding-left:5px}.wtad-mhapi-inline .splide__arrow--prev{margin-left:-20px}.wtad-mhapi-inline .splide__arrow--next{margin-right:-20px}.wtad-mhapi-inline .footer{float:right;width:120px;margin-top:auto;margin-bottom:auto;padding-top:5px}.wtad-mhapi-inline .footer div{margin-top:2px}.wtad-mhapi-inline .footer .mhTotalRecords{color:#f56932;font-weight:700;margin-bottom:10px}.wtad-mhapi-mobile .mhTotalRecords{color:#f56932;font-weight:700;margin-bottom:10px}</style> <script>eval(mod_pagespeed_1OAca2AXXX);</script> <form><input type="hidden" id="categorySuggestionIncludeAll" value="1"></form> </body></html>