{"id":43070,"date":"2011-08-10T22:38:46","date_gmt":"2011-08-11T06:38:46","guid":{"rendered":"http:\/\/blogs.discovermagazine.com\/gnxp\/?p=13501"},"modified":"2011-08-10T22:38:46","modified_gmt":"2011-08-11T06:38:46","slug":"half-the-variation-in-i-q-due-to-variation-in-genes","status":"publish","type":"post","link":"https:\/\/www.razib.com\/wordpress\/2011\/08\/10\/half-the-variation-in-i-q-due-to-variation-in-genes\/","title":{"rendered":"Half the variation in I.Q. due to variation in genes"},"content":{"rendered":"<p><a href=\"http:\/\/blogs.discovermagazine.com\/gnxp\/files\/2011\/08\/Bell-Curve.gif\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/blogs.discovermagazine.com\/gnxp\/files\/2011\/08\/Bell-Curve.gif\" alt=\"\" title=\"Bell-Curve\" width=\"282\" height=\"221\" class=\"alignleft size-full wp-image-13506\" \/><\/a>A <a href=\"http:\/\/www.ncbi.nlm.nih.gov\/pubmed\/21826061\">new paper<\/a> in <i>Molecular Psychiatry<\/i> has been reported on extensively in the media, and readers have mentioned it several times in the comments. I read it. It&#8217;s titled <a href=\"http:\/\/www.ncbi.nlm.nih.gov\/pubmed\/21826061\">Genome-wide association studies establish that human intelligence is highly heritable and polygenic<\/a>. But the fact is that I read this paper last year. Back then it was titled <a href=\"http:\/\/www.nature.com\/ng\/journal\/v42\/n7\/abs\/ng.608.html\">Common SNPs explain a large proportion of the heritability for human height<\/a>. I kid, but you get the picture. The new paper establishes for intelligence what we already suspected: <b>most of the genetic variation in this heritable trait is accounted for by numerous genes of small effect.<\/b> You inherit variants of these numerous genes from your two parents, and your own trait value is to a large extent a combination of the parental values. The issue is not <i>if<\/i> intelligence is heritable, but the extent of that heritability.<\/p>\n<p>\nThe standard way to estimate human heritability was to track similarities across individuals with varying degrees of relatedness. For example, compare identical twin correlations on a trait with fraternal twin correlations. The main objection to these methods is that one could argue &#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A new paper in Molecular Psychiatry has been reported on extensively in the media, and readers have mentioned it several times in the comments. I read it. It&#8217;s titled Genome-wide association studies establish that human intelligence is highly her&#8230;<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[85,4,82,498,1682,1683,17,1038,1684],"tags":[],"class_list":["post-43070","post","type-post","status-publish","format-standard","hentry","category-behavior-genetics","category-genetics","category-genomics","category-i-q","category-i-q-genes","category-i-q-genomics","category-psychology","category-quantitative-genomics","category-quantitative-traits"],"_links":{"self":[{"href":"https:\/\/www.razib.com\/wordpress\/wp-json\/wp\/v2\/posts\/43070","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.razib.com\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.razib.com\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.razib.com\/wordpress\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/www.razib.com\/wordpress\/wp-json\/wp\/v2\/comments?post=43070"}],"version-history":[{"count":8,"href":"https:\/\/www.razib.com\/wordpress\/wp-json\/wp\/v2\/posts\/43070\/revisions"}],"predecessor-version":[{"id":43104,"href":"https:\/\/www.razib.com\/wordpress\/wp-json\/wp\/v2\/posts\/43070\/revisions\/43104"}],"wp:attachment":[{"href":"https:\/\/www.razib.com\/wordpress\/wp-json\/wp\/v2\/media?parent=43070"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.razib.com\/wordpress\/wp-json\/wp\/v2\/categories?post=43070"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.razib.com\/wordpress\/wp-json\/wp\/v2\/tags?post=43070"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}