{"id":5154,"date":"2016-04-21T11:56:02","date_gmt":"2016-04-21T08:56:02","guid":{"rendered":"http:\/\/bilimvegelecek.com.tr\/?p=5154"},"modified":"2016-04-21T11:56:02","modified_gmt":"2016-04-21T08:56:02","slug":"neandertal-y-kromozomu-neden-ayri-turler-olarak-devam-ettigimize-yonelik-ipuclari-sunuyor","status":"publish","type":"post","link":"https:\/\/bilimvegelecek.com.tr\/index.php\/2016\/04\/21\/neandertal-y-kromozomu-neden-ayri-turler-olarak-devam-ettigimize-yonelik-ipuclari-sunuyor","title":{"rendered":"Neandertal Y-kromozomu, neden ayr\u0131 t\u00fcrler olarak devam etti\u011fimize y\u00f6nelik ipu\u00e7lar\u0131 sunuyor"},"content":{"rendered":"<p><strong>G\u00f6rsel a\u00e7\u0131klamas\u0131:<\/strong> \u00c7al\u0131\u015fmalar\u0131n\u0131 <em>American Journal of Human Genet\u0131cs<\/em> dergisinde yay\u0131mlayan ara\u015ft\u0131rmac\u0131lar, bir <em>Neandertal<\/em> Y-kromozomunun ilk ayr\u0131nt\u0131l\u0131 genetik analizini tamamlad\u0131lar. Bulgular, <em>Neandertal<\/em>ler ve modern insanlar aras\u0131ndaki ili\u015fkinin yeni bir anlay\u0131\u015f\u0131n\u0131 ve ayr\u0131 iki soy \u00e7izgisinin devaml\u0131l\u0131\u011f\u0131n\u0131 sa\u011flam\u0131\u015f olabilen genetik fakt\u00f6rlerin baz\u0131lar\u0131n\u0131 sunuyor.<\/p>\n<p>&nbsp;<\/p>\n<p>Ara\u015ft\u0131rmac\u0131lar Y-kromozomunun, kal\u0131nt\u0131lardan \u00e7\u0131kar\u0131lm\u0131\u015f <em>Neandertal<\/em> genom analizinin ana bile\u015feni oldu\u011funu a\u00e7\u0131klad\u0131lar. Stanford \u00dcniversitesi\u2019nden Mendez Fernando, \u201c<em>Neandertal<\/em> Y-kromozomunun karakterize edilmesi, <em>Neandertal<\/em> ve modern insan pop\u00fclasyonlar\u0131n\u0131n ayr\u0131lmas\u0131n\u0131 daha iyi anlayabilmek i\u00e7in bize yard\u0131mc\u0131 olmaktad\u0131r. Ayr\u0131ca bu karakterizasyon, hibrit d\u00f6ller i\u00e7erisindeki arkaik ve modern [gen] varyantlar\u0131 aras\u0131ndaki olas\u0131 genetik etkile\u015fimleri ke\u015ffetmeyi de m\u00fcmk\u00fcn k\u0131lmaktad\u0131r\u201d a\u00e7\u0131klamas\u0131nda bulunuyor.<\/p>\n<p>Mendez ve \u00e7al\u0131\u015fma arkada\u015flar\u0131, \u0130spanya El Sidr\u00f3n\u2019da bulunan bir <em>Neandertal<\/em> erke\u011findeki Y-kromozomunu analiz ettiler. Bu analiz, <em>Neandertal<\/em>ler ve modern insanlar\u0131n yakla\u015f\u0131k 590 bin y\u0131l \u00f6nce ayr\u0131ld\u0131\u011f\u0131n\u0131 ileri s\u00fcrmektedir ve bu sonu\u00e7 \u00f6nceki kan\u0131tlarla da tutarl\u0131d\u0131r.<\/p>\n<p>Ara\u015ft\u0131rmac\u0131lar diziledikleri <em>Neandertal<\/em> Y-kromozomu DNA\u2019s\u0131n\u0131n, modern insanlardaki herhangi bir Y-kromozomundan farkl\u0131 oldu\u011funu belirtiyorlar. Ara\u015ft\u0131rmac\u0131lar ayr\u0131ca, <em>Neandertal<\/em> ve modern insan Y-kromozomu \u00fczerindeki genler aras\u0131ndaki \u015fa\u015f\u0131rt\u0131c\u0131 baz\u0131 protein kodlama farkl\u0131l\u0131klar\u0131 bulmu\u015flard\u0131r.<\/p>\n<p>Bu farkl\u0131l\u0131klar\u0131n \u00fc\u00e7 tanesi, insanlarda erke\u011fe \u00f6zg\u00fc min\u00f6r doku uyumu antijenlerini \u00fcreten genlerdeki yanl\u0131\u015f anlaml\u0131 mutasyonlard\u0131r. Bu genlerin birinden (<em>KDM5D<\/em> olarak bilinir) t\u00fcrevlenen antijenlerin, baz\u0131 hamile kad\u0131nlarda erkek fet\u00fcslerine kar\u015f\u0131 bir imm\u00fcn yan\u0131t olu\u015fturdu\u011fu ve d\u00fc\u015f\u00fcklere neden oldu\u011fu d\u00fc\u015f\u00fcn\u00fclmektedir.<\/p>\n<p>Ara\u015ft\u0131rmac\u0131lar, bu genlerin bir ya da daha fazlas\u0131ndaki uyu\u015fmazl\u0131klar\u0131n, eski insanlar ve <em>Neandertal<\/em>ler aras\u0131ndaki kar\u0131\u015fmay\u0131 \u00f6nledi\u011fini, soy \u00e7izgilerinin ayr\u0131 bir \u015fekilde devam etmesinde bir rol oynayabilece\u011fini d\u00fc\u015f\u00fcnmektedirler.<\/p>\n<p>Bustamante \u201cBizim buldu\u011fumuz mutasyonlar\u0131n do\u011fadaki i\u015flevleri bize, Y-kromozomunun gen ak\u0131\u015f engeliyle ilgili bir rol oynayabildi\u011fini \u00f6nermi\u015ftir\u201d a\u00e7\u0131klamas\u0131n\u0131 yap\u0131yor. Bunun \u00fczerine Mendez de, \u201c\u0130\u015flevsel farkl\u0131l\u0131klar\u0131n \u00e7o\u011funun, sperm \u00fcretimine kar\u0131\u015fan genlerden ziyade bu antijen genleriyle ili\u015fkili olduklar\u0131n\u0131 g\u00f6steren bulgular bir s\u00fcrpriz yaratm\u0131\u015ft\u0131r\u201d diye ekliyor.<\/p>\n<p>Ara\u015ft\u0131rmac\u0131lar, bir hibrit <em>Neandertal<\/em> ve insan t\u00fcr\u00fcn\u00fcn olu\u015fumu konusunda, \u015fa\u015fk\u0131nl\u0131\u011fa neden olan Y-kromozom mutasyonlar\u0131n\u0131n rol\u00fcn\u00fcn do\u011frulayacak daha fazla ara\u015ft\u0131rman\u0131n gerekli oldu\u011funu belirtiyorlar.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u00c7eviren: Yusuf S\u00fcrmeli<\/strong><\/p>\n<p><em>\u0130T\u00dc Molek\u00fcler Biyoloji ve Genetik B\u00f6l\u00fcm\u00fc Doktora \u00d6\u011fr.<\/em><\/p>\n<p><strong>\u00a0<\/strong><\/p>\n<p><strong>Kaynak:<br \/>\n<\/strong><a href=\"http:\/\/www.heritagedaily.com\/2016\/04\/neanderthal-y-chromosome-offers-clues-to-what-kept-us-separate-species\/110532\">http:\/\/www.heritagedaily.com\/2016\/04\/neanderthal-y-chromosome-offers-clues-to-what-kept-us-separate-species\/110532<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>G\u00f6rsel a\u00e7\u0131klamas\u0131: \u00c7al\u0131\u015fmalar\u0131n\u0131 American Journal of Human Genet\u0131cs dergisinde yay\u0131mlayan ara\u015ft\u0131rmac\u0131lar, bir Neandertal Y-kromozomunun ilk ayr\u0131nt\u0131l\u0131 genetik analizini tamamlad\u0131lar. Bulgular, Neandertaller ve modern insanlar aras\u0131ndaki ili\u015fkinin yeni bir anlay\u0131\u015f\u0131n\u0131 ve ayr\u0131 iki soy \u00e7izgisinin devaml\u0131l\u0131\u011f\u0131n\u0131 sa\u011flam\u0131\u015f olabilen genetik fakt\u00f6rlerin baz\u0131lar\u0131n\u0131 sunuyor. &nbsp; Ara\u015ft\u0131rmac\u0131lar Y-kromozomunun, kal\u0131nt\u0131lardan \u00e7\u0131kar\u0131lm\u0131\u015f Neandertal genom analizinin ana bile\u015feni oldu\u011funu a\u00e7\u0131klad\u0131lar. Stanford \u00dcniversitesi\u2019nden [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":5156,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[211,19,32,231],"tags":[],"class_list":["post-5154","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-antropoloji","category-bilim-gundemi","category-evrim","category-molekuler-biyoloji-ve-genetik"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/posts\/5154","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/comments?post=5154"}],"version-history":[{"count":0,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/posts\/5154\/revisions"}],"wp:attachment":[{"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/media?parent=5154"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/categories?post=5154"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/tags?post=5154"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}