{"id":1169,"date":"2004-10-25T11:10:24","date_gmt":"2004-10-25T11:10:24","guid":{"rendered":"http:\/\/joi.betra.is\/?p=1169"},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-30T00:00:00","slug":"","status":"publish","type":"post","link":"https:\/\/joi.betra.is\/?p=1169","title":{"rendered":"Skr\u00edtnasta d\u00fdr \u00ed heimi"},"content":{"rendered":"<p><a href=\"http:\/\/www.abc.net.au\/news\/newsitems\/200410\/s1226827.htm\">It&#8217;s official &#8211; the platypus is weird<\/a>.<\/p>\n<blockquote><p>Scientists from the Australian National University have proved what many have thought for years &#8211; platypuses are really weird.<\/p>\n<p>In the international Nature journal today they report a platypus has five chromosones determining sex, not one &#8211; like the rest of the species in the world.<\/p>\n<p>Professor Jennifer Graves says platypus have five X and five Y chromosomes, and when sperm are made it gets even stranger.<\/p>\n<p>&#8220;What we&#8217;ve discovered is that these five Xs and five Ys line up in a great big long chain, that go XY XY XY XY XY XY, and then all the X chromosomes move to one pole, and all the Y chromosomes move to the other,&#8221; she said.<\/p>\n<p>Professor Graves says there is another unexpected finding.<\/p>\n<p>&#8220;One end of the chain looks like human sex chromosomes but the other end of the chain looks like bird sex chromosomes, so the chain is actually linking a very ancient system of sex determination in birds and probably reptiles too,&#8221; she said.<\/p>\n<p>The unique status of the Australian mammal is now unassailable.<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>It&#8217;s official &#8211; the platypus is weird. Scientists from the Australian National University have proved what many have thought for years &#8211; platypuses are really weird. In the international Nature journal today they report a platypus has five chromosones determining sex, not one &#8211; like the rest of the species in the world. Professor Jennifer [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-1169","post","type-post","status-publish","format-standard","hentry","author-joi"],"_links":{"self":[{"href":"https:\/\/joi.betra.is\/index.php?rest_route=\/wp\/v2\/posts\/1169"}],"collection":[{"href":"https:\/\/joi.betra.is\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/joi.betra.is\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/joi.betra.is\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/joi.betra.is\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1169"}],"version-history":[{"count":0,"href":"https:\/\/joi.betra.is\/index.php?rest_route=\/wp\/v2\/posts\/1169\/revisions"}],"wp:attachment":[{"href":"https:\/\/joi.betra.is\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1169"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/joi.betra.is\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1169"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/joi.betra.is\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1169"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}