MedlinePlus: Genetics

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itemprop="itemListElement" itemtype="http://schema.org/ListItem"> <a href="https://medlineplus.gov/" itemprop="item"><span itemprop="name">Home</span></a> → <meta itemprop="position" content="1"/> </div> <div> <span>Genetics</span> </div> </div> </div> <span class="page-url print-only">URL of this page: https://medlineplus.gov/genetics/</span> <div > <article> <div class="page-info"> <div class="page-title"> <a name="start" id="start"></a> <h1>Genetics</h1> </div> <div class="page-actions"></div> <noscript><span class="js-disabled-message">To use the sharing features on this page, please enable JavaScript.</span></noscript> </div> <div class="main"> <section><div class="mp-content"><p>Find consumer-friendly information about the effects of genetic variation on human health.</p>  <a href="https://medlineplus.gov/genetics/condition/"> <div class="gen-linkcard gen-mb"> <div class="resrow"> <div class="gen-full-quarter"> <div class="recog-img"><img alt="Genetic Conditions" src="https://medlineplus.gov/images/genetic-conditions_thumb.jpg"/></div> </div> <div class="gen-three-quarters"> <div> <h2 class="gen-h2">Genetic Conditions</h2> <span class="gen-blacktext">Learn about the signs and symptoms, causes, and inheritance of more than 1,300 health conditions with a genetic basis.</span> <p></p> </div> </div> </div> </div> </a> <div class="gen-clearbreak"></div>   <a href="https://medlineplus.gov/genetics/gene/"> <div class="gen-linkcard gen-mb"> <div class="resrow"> <div class="gen-full-quarter"> <div class="recog-img"><img alt="Genes" src="https://medlineplus.gov/images/gene_thumb.jpg"/></div> </div> <div class="gen-three-quarters"> <div> <h2 class="gen-h2">Genes</h2> <span class="gen-blacktext">Find information about the function of more than 1,400 genes and see how changes in these genes are related to health conditions.</span> <p></p> </div> </div> </div> </div> </a> <div class="gen-clearbreak"></div>   <a href="https://medlineplus.gov/genetics/chromosome/"> <div class="gen-linkcard gen-mb"> <div class="resrow"> <div class="gen-full-quarter"> <div class="recog-img"><img alt="Chromosomes and mtDNA" src="https://medlineplus.gov/images/chromosome_thumb.jpg"/></div> </div> <div class="gen-three-quarters"> <div> <h2 class="gen-h2">Chromosomes and mtDNA</h2> <span class="gen-blacktext">Read about each of the 23 pairs of human chromosomes and mitochondrial DNA (mtDNA).</span> <p></p> </div> </div> </div> </div> </a> <div class="gen-clearbreak"></div>   <a href="https://medlineplus.gov/genetics/understanding/"> <div class="gen-linkcard gen-mb"> <div class="resrow"> <div class="gen-full-quarter"> <div class="recog-img"><img alt="Help Me Understand Genetics" src="https://medlineplus.gov/images/understand-genetics_thumb.jpg"/></div> </div> <div class="gen-three-quarters"> <div> <h2 class="gen-h2">Help Me Understand Genetics</h2> <span class="gen-blacktext">Explore topics in human genetics, from the basics of DNA to genomic research and personalized medicine.</span> <p></p> </div> </div> </div> </div> </a> <div class="gen-clearbreak"></div> </div> </section> </div> <div class="side"> <aside> <section><div class="side-section"> <div class="mp-img"> <img class="scale-with-grid" src="https://medlineplus.gov/images/genetics.jpg" alt="Genetics"> </div> </div></section> <section><div class="side-section"> <div class="section-header"> <h2>Related Health Topics</h2> </div> <div class="section-body"> <ul class="relatedmp"> <li><a href="https://medlineplus.gov/genesandgenetherapy.html">Genes and Gene Therapy</a></li> <li><a href="https://medlineplus.gov/geneticdisorders.html">Genetic Disorders</a></li> <li><a href="https://medlineplus.gov/genetictesting.html">Genetic Testing</a></li> <li><a href="https://medlineplus.gov/newbornscreening.html">Newborn Screening</a></li> </ul> </div> </div></section> <section><div class="side-section"><div class="mp-content"><section> <div class="section-header"> <h2>Understanding Genetics</h2> </div> <div class="section-body"> <p class="gen-mb-p-10"><a href="https://medlineplus.gov/genetics/understanding/basics/dna/">What is DNA?</a></p> <p class="gen-mb-p-10"><a href="https://medlineplus.gov/genetics/understanding/basics/gene/">What is a gene?</a></p> <p class="gen-mb-p-10"><a href="https://medlineplus.gov/genetics/understanding/mutationsanddisorders/genemutation/">What is a gene variant聽and how do variants聽occur?</a></p> <p class="gen-mb-p-3"><a href="https://medlineplus.gov/genetics/understanding/inheritance/runsinfamily/">What does it mean if a disorder seems to run in my family?</a></p> </div> </section></div> </div></section> </aside> </div> <div class="bottom"> <section>  </section> </div> </article> </div> </div> <footer> <div id="mplus-footer"> <div class="footer1"> <ul class="secondarynav"> <li><a href="https://medlineplus.gov/about/">About MedlinePlus</a></li> <li><a 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MedlinePlus: Genetics