{"id":568892,"date":"2019-01-18T07:33:12","date_gmt":"2019-01-18T11:33:12","guid":{"rendered":"https:\/\/spaceweekly.com\/?guid=2e3eacb74f24279bd80e650fdefee00b"},"modified":"2019-01-18T07:33:12","modified_gmt":"2019-01-18T11:33:12","slug":"why-do-hydra-end-up-with-just-a-single-head","status":"publish","type":"post","link":"https:\/\/spaceweekly.com\/?p=568892","title":{"rendered":"Why do Hydra end up with just a single head?"},"content":{"rendered":"<p>Often considered immortal, the freshwater Hydra can regenerate any part of its body, a trait discovered by the Geneva naturalist Abraham Trembley nearly 300 years ago. Any fragment of its body containing a few thousands cells can regenerate the entire animal The one-centimeter polyp has a developmental organizer center located at the head level, and another located in the foot. The head organizer performs two opposite activities: activating, which causes the head to differentiate, and inhibiting, which prevents the formation of supernumerary heads.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Often considered immortal, the freshwater Hydra can regenerate any part of its body, a trait discovered by the Geneva naturalist Abraham Trembley nearly 300 years ago. Any fragment of its body containing a few thousands cells can regenerate the entire &#8230;<\/p>\n","protected":false},"author":0,"featured_media":615444,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-568892","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts\/568892","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=568892"}],"version-history":[{"count":1,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts\/568892\/revisions"}],"predecessor-version":[{"id":568893,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts\/568892\/revisions\/568893"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/media\/615444"}],"wp:attachment":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=568892"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=568892"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=568892"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}