{"id":5005732,"date":"2008-05-04T10:36:14","date_gmt":"2008-05-04T08:36:14","guid":{"rendered":"https:\/\/criticalbiomass.blog.hu\/2008\/05\/04\/stumpy"},"modified":"2008-05-04T10:36:14","modified_gmt":"2008-05-04T08:36:14","slug":"stumpy","status":"publish","type":"post","link":"https:\/\/criticalbiomass.hu\/?p=5005732","title":{"rendered":"Stumpy"},"content":{"rendered":"

\nBevallottan ignor\u00e1ns ember r\u00e9v\u00e9n, aki k\u00e9pes h\u00f3napokat le\u00e9lni az ingyenes (pletyka)lapok b\u00f6ng\u00e9sz\u00e9se n\u00e9lk\u00fcl, n\u00e9mi f\u00e1zisk\u00e9s\u00e9ssel, csak most \u00e9rtes\u00fcltem Stumpy, a n\u00e9gyl\u00e1b\u00fa kacsa<\/a> l\u00e9t\u00e9r\u0151l (extra l\u00e1bainak elveszt\u00e9se aprop\u00f3j\u00e1n<\/a>), noha h\u0151s\u00fcnk, tavaly febru\u00e1ri sz\u00fclet\u00e9se \u00f3ta, kisebb celebritynek<\/a> sz\u00e1m\u00edt errefele.\n<\/p>\n

\n\u00c9s persze a n\u00e9gyl\u00e1b\u00fa sz\u00e1rnyast s\u00fajt\u00f3 fejl\u0151d\u00e9si rendelleness\u00e9g pont olyan dolog, aminek a l\u00e1tv\u00e1nya megn\u00f6veli egy fejl\u0151d\u00e9sbiol\u00f3gus pulzus\u00e1t (l\u00e1sd m\u00e9g Janus, a k\u00e9tfej\u0171 tekn\u0151s <\/a>eset\u00e9t is), arr\u00f3l nem is sz\u00f3lva, hogy mindig egy k\u00f6nnyed blogbejegyz\u00e9s t\u00e9m\u00e1ja lehet.\n<\/p>\n

\nA v\u00e9gtagok fejl\u0151d\u00e9s\u00e9t kor\u00e1bban m\u00e1r el\u00e9g hosszan taglaltam<\/a>, \u00edgy ez\u00fattal eg\u00e9sz r\u00f6viden csak annyit eml\u00e9keztet\u0151\u00fcl, hogy a gerinces \u00e1llatok v\u00e9gtagjai, fejl\u0151d\u00e9s\u00fck sor\u00e1n a testfal k\u00e9t oldal\u00e1n megjelen\u0151 k\u00e9t p\u00e1r dudorb\u00f3l, \u00fan. v\u00e9gtagbimb\u00f3b\u00f3l alakulnak ki.\n<\/p>\n

\nEzekben a v\u00e9gtagbimb\u00f3kban m\u00e1r jelen vannak azok a molekul\u00e1ris jelek is, amelyek biztos\u00edtj\u00e1k, hogy els\u0151 v\u00e9gtagunkb\u00f3l k\u00e9z, h\u00e1ts\u00f3 v\u00e9gtagunkb\u00f3l l\u00e1b legyen, illetve a h\u00fcvelyk- \u00e9s kisujjunk ott alakuljon ki ahol. Olyannyira \u00edgy van ez hogy ha a v\u00e9gtagbimb\u00f3t elforgatjuk a fejl\u0151d\u00e9s sor\u00e1n, akkor egy ford\u00edtott v\u00e9gtag fejl\u0151dik ki bel\u0151le.\n<\/p>\n

\n
\nAz els\u0151 efajta k\u00eds\u00e9rleteket m\u00e9g a m\u00falt sz\u00e1zad elej\u00e9n v\u00e9gezt\u00e9k el, az embriol\u00f3gia els\u0151 aranykor\u00e1ban szorgalmas kutat\u00f3k, \u00e9s a v\u00e1lasztott model \u00e1llat, a kor divatj\u00e1nak (\u00e9s a praktikus szempontoknak) megfelel\u0151en egy k\u00e9t\u00e9lt\u0171, szalamandra<\/a> faj volt.\n<\/p>\n

\nA szorgalmas embrion\u00e1lis "cut-and-paste" k\u00eds\u00e9rletek sor\u00e1n ( a baloldali \u00e1br\u00e1n a v\u00e9gtagbimb\u00f3t a kis k\u00f6r jel\u00f6li, a D,V, ill. A, P bet\u0171k pedig az embrion\u00e1lis tengelyeket, amelyekr\u0151l a m\u00e1r eml\u00edtett v\u00e9gtagfejl\u0151d\u00e9ses posztban<\/a> b\u0151vebben is \u00edrtam) persze el\u0151bb ut\u00f3bb \u00f3hatatlanul is sor ker\u00fclt arra, amikor a v\u00e9gtagbimb\u00f3t egyszer\u0171en kett\u00e9szelt\u00e9k, "l\u00e1m most mi lesz" felki\u00e1lt\u00e1ssal. Az eredm\u00e9ny: egy v\u00e9gtag helyett kett\u0151 alakult ki.\n<\/p>\n

\nValami hasonl\u00f3 t\u00f6rt\u00e9nhetett Stumpy-val is a toj\u00e1sban. Pontosan tal\u00e1n sohasem azonos\u00edthat\u00f3 okok miatt, a h\u00e1ts\u00f3 v\u00e9gtagbimb\u00f3i kett\u00e9 v\u00e1ltak, \u00edgy azt\u00e1n k\u00e9t extra l\u00e1bbal k\u00e1sz\u00e1l\u00f3dott ki a toj\u00e1sb\u00f3l – \u00e9pp az ellenkez\u0151 jel\u0171 rendelleness\u00e9get mutatva, mint a nemr\u00e9g tal\u00e1lt hatl\u00e1b\u00fa oktopusz<\/a>.\n<\/p>\n

\n
\n(A gerinces \u00e9s puhatest\u0171 v\u00e9gtagbimb\u00f3k persze ink\u00e1bb k\u00fcl\u00f6nb\u00f6znek, mint hasonl\u00edtanak, \u00edgy a fenti \u00f6sszehasonl\u00edt\u00e1s el\u00e9g nagyvonal\u00fa – de annak pont megfelel. ;-))
\n<\/font><\/p>\n","protected":false},"excerpt":{"rendered":"

Bevallottan ignor\u00e1ns ember r\u00e9v\u00e9n, aki k\u00e9pes h\u00f3napokat le\u00e9lni az ingyenes (pletyka)lapok b\u00f6ng\u00e9sz\u00e9se n\u00e9lk\u00fcl, n\u00e9mi f\u00e1zisk\u00e9s\u00e9ssel, csak most \u00e9rtes\u00fcltem Stumpy, a n\u00e9gyl\u00e1b\u00fa kacsa l\u00e9t\u00e9r\u0151l (extra l\u00e1bainak elveszt\u00e9se aprop\u00f3j\u00e1n), noha h\u0151s\u00fcnk, tavaly febru\u00e1ri sz\u00fclet\u00e9se \u00f3ta, kisebb celebritynek sz\u00e1m\u00edt errefele. \u00c9s persze a … Egy kattint\u00e1s ide a folytat\u00e1shoz…. →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-5005732","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/criticalbiomass.hu\/index.php?rest_route=\/wp\/v2\/posts\/5005732","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/criticalbiomass.hu\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/criticalbiomass.hu\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/criticalbiomass.hu\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/criticalbiomass.hu\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5005732"}],"version-history":[{"count":0,"href":"https:\/\/criticalbiomass.hu\/index.php?rest_route=\/wp\/v2\/posts\/5005732\/revisions"}],"wp:attachment":[{"href":"https:\/\/criticalbiomass.hu\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5005732"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/criticalbiomass.hu\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5005732"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/criticalbiomass.hu\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5005732"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}