{"id":85783,"date":"2018-12-13T06:02:44","date_gmt":"2018-12-13T14:02:44","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2018\/12\/biologists-shed-new-light-on-the-diversity-of-natural-selection"},"modified":"2018-12-13T06:02:44","modified_gmt":"2018-12-13T14:02:44","slug":"biologists-shed-new-light-on-the-diversity-of-natural-selection","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2018\/12\/biologists-shed-new-light-on-the-diversity-of-natural-selection","title":{"rendered":"Biologists shed new light on the diversity of natural selection"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/biologists-shed-new-light-on-the-diversity-of-natural-selection.jpg\"><\/a><\/p>\n<p>Evolutionary genetic theory shows that genetic variation can be maintained when selection favors different versions of the same <a href=\"https:\/\/phys.org\/tags\/genes\/\" rel=\"tag\" class=\"\">genes<\/a> in males and females\u2014an inevitable outcome of having separate sexes. That is, for many genes, there may not be a universally \u2018best\u2019 <a href=\"https:\/\/phys.org\/tags\/version\/\" rel=\"tag\" class=\"\">version<\/a>, but rather one is best for males and one is best for females. This is known as sexually antagonistic genetic variation, but it might only be maintained under a narrow set of conditions, limiting its prevalence in nature. However, a new study by Dr. Karl Grieshop and Professor G\u00f6ran Arnqvist, published in <i>PLoS Biology<\/i>, may change this view.<\/p>\n<p>\u201cOne of the simplest ways for sexually antagonistic selection to maintain genetic variation in <a href=\"https:\/\/phys.org\/tags\/fitness\/\" rel=\"tag\" class=\"\">fitness<\/a> is via sex-specific dominance reversal, where neither version of a gene is always dominant or recessive, but rather the version that benefits a given sex is also dominant in that sex. So whether a given version of a gene is dominant or recessive to the other will depend upon which sex it is in,\u201d says Dr. Karl Grieshop.<\/p>\n<p><!-- Link: <a href=\"https:\/\/phys.org\/news\/2018-12-biologists-diversity-natural.html#jCp\">https:\/\/phys.org\/news\/2018&#45;12-biologists-diversity-natural.html#jCp<\/a> --><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Evolutionary genetic theory shows that genetic variation can be maintained when selection favors different versions of the same genes in males and females\u2014an inevitable outcome of having separate sexes. That is, for many genes, there may not be a universally \u2018best\u2019 version, but rather one is best for males and one is best for females. [\u2026]<\/p>\n","protected":false},"author":501,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[412,1901],"tags":[],"class_list":["post-85783","post","type-post","status-publish","format-standard","hentry","category-genetics","category-sex"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/85783","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/501"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=85783"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/85783\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=85783"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=85783"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=85783"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}