{"id":87248,"date":"2023-05-08T12:07:03","date_gmt":"2023-05-08T12:07:03","guid":{"rendered":"https:\/\/haberulus.net\/?p=87248"},"modified":"2023-05-08T12:07:03","modified_gmt":"2023-05-08T12:07:03","slug":"burnundan-nefret-edenler-tum-suc-neandertal-dnasinda","status":"publish","type":"post","link":"https:\/\/haberulus.net\/?p=87248","title":{"rendered":"Burnundan nefret edenler\u2026 T\u00fcm su\u00e7 Neandertal DNA\u2019s\u0131nda"},"content":{"rendered":"

Pek \u00e7ok insan burnunun \u015feklinden memnun olmayabiliyor ve hatta estetik cerrahiye bile ba\u015fvurabiliyor. Peki y\u00fcz\u00fcm\u00fcz\u00fcn en belirgin fig\u00fcrlerinden biri olan burnumuzun \u015feklini kime bor\u00e7luyuz?<\/p>\n

Bilim insanlar\u0131, Neandertal DNA\u2019s\u0131n\u0131n burnumuzun \u015feklinin olu\u015fmas\u0131nda rol ald\u0131\u011f\u0131n\u0131 ortaya \u00e7\u0131kard\u0131.<\/p>\n

UCL ara\u015ft\u0131rmac\u0131lar\u0131 taraf\u0131ndan y\u00fcr\u00fct\u00fclen yeni \u00e7al\u0131\u015fmada, Afrika\u2019dan ayr\u0131ld\u0131ktan sonra daha so\u011fuk iklimlere adapte olan insanlar\u0131n, daha uzun bir buruna neden olan genin kayna\u011f\u0131 oldu\u011fu ileri s\u00fcr\u00fcl\u00fcyor.<\/p>\n

Ara\u015ft\u0131rmay\u0131 y\u00f6neten Dr Kaustubh Adhikari \u015funlar\u0131 s\u00f6yledi: \u201cNeandertal genomunun dizilenmesinden bu yana, kendi atalar\u0131m\u0131z Neandertallerle \u00e7iftle\u015ferek bize onlar\u0131n DNA\u2019lar\u0131ndan k\u00fc\u00e7\u00fck par\u00e7alar b\u0131rakt\u0131\u011f\u0131n\u0131 \u00f6\u011frenebildik. Neandertallerden miras kalan baz\u0131 DNA\u2019lar\u0131n y\u00fcz\u00fcm\u00fcz\u00fcn \u015feklini etkiledi\u011fini bulduk.\u201d<\/p>\n

\"\"<\/p>\n

6 B\u0130NDEN FAZLA K\u0130\u015e\u0130 \u0130NCELEND\u0130<\/b><\/p>\n

Ara\u015ft\u0131rmac\u0131lar; Brezilya, Kolombiya, \u015eili, Meksika ve Peru\u2019dan toplanan Avrupa, K\u0131z\u0131lderili ve Afrika k\u00f6kenli 6 binden fazla ki\u015fiden al\u0131nan verileri kulland\u0131.<\/p>\n

\u0130nsanlardan al\u0131nan genetik bilgiler, y\u00fczlerinin foto\u011fraflar\u0131yla kar\u015f\u0131la\u015ft\u0131r\u0131ld\u0131. Ara\u015ft\u0131rmac\u0131lar, farkl\u0131 y\u00fcz \u00f6zelliklerinin farkl\u0131 genetik \u00f6zelliklerle nas\u0131l ba\u011flant\u0131l\u0131 oldu\u011funu g\u00f6rmek i\u00e7in y\u00fczlerdeki burun ucu veya dudak kenar\u0131 gibi noktalar aras\u0131ndaki mesafelere bakt\u0131lar. Ve 33 genom b\u00f6lgesi belirlediler.<\/p>\n

Ara\u015ft\u0131rmac\u0131lar, \u00f6zellikle ATF3 olarak adland\u0131r\u0131lan bir genom b\u00f6lgesinde, K\u0131z\u0131lderili soyuna sahip bir\u00e7ok insan\u0131n Neandertallerden miras kalan genetik ize sahip olduklar\u0131n\u0131 buldular. Bu da burnun uzunlu\u011funun artmas\u0131na neden oluyor.<\/p>\n

\u0130KL\u0130M KO\u015eULLARI BURNUN \u015eEKL\u0130N\u0130 DE\u011e\u0130\u015eT\u0130R\u0130YOR<\/b><\/p>\n

Fudan \u00dcniversitesi\u2019nden Dr Qing Li \u015funlar\u0131 s\u00f6yledi: \u201cBurunlar\u0131m\u0131z\u0131n \u015feklinin bu \u015fekilde olu\u015ftu\u011fu uzun s\u00fcredir tahmin ediliyor. Burunlar\u0131m\u0131z soludu\u011fumuz havan\u0131n s\u0131cakl\u0131\u011f\u0131n\u0131 ve nemini d\u00fczenlememize yard\u0131mc\u0131 olabilece\u011finden, farkl\u0131 burun \u015fekilleri atalar\u0131m\u0131z\u0131n ya\u015fad\u0131\u011f\u0131 farkl\u0131 iklimlere daha uygun olabilir. Burada tan\u0131mlad\u0131\u011f\u0131m\u0131z gen, atalar\u0131m\u0131z Afrika\u2019y\u0131 terk ederken insanlar\u0131n daha so\u011fuk iklimlere uyum sa\u011flamas\u0131na yard\u0131mc\u0131 olmak i\u00e7in Neandertallerden miras al\u0131nm\u0131\u015f olabilir.\u201d<\/p>\n

\"\"<\/p>\n

Fudan \u00dcniversitesi, UCL Genetics, Evolution & Environment ve Aix-Marseille \u00dcniversitesi\u2019nden ortak yazar Profes\u00f6r Andres Ruiz-Linares ise ara\u015ft\u0131rmayla ilgili \u015funlar\u0131 ekledi: \u201c\u0130nsan \u00e7e\u015fitlili\u011fine ili\u015fkin \u00e7o\u011fu genetik \u00e7al\u0131\u015fma, Avrupal\u0131lar\u0131n genlerini ara\u015ft\u0131r\u0131r. Oysa \u00e7al\u0131\u015fmam\u0131zda \u00e7e\u015fitli Latin Amerikal\u0131 kat\u0131l\u0131mc\u0131lar, genetik \u00e7al\u0131\u015fma bulgular\u0131n\u0131n kapsam\u0131n\u0131 geni\u015fletiyor ve t\u00fcm insanlar\u0131n geneti\u011fini daha iyi anlamam\u0131za yard\u0131mc\u0131 oluyor.\u201d<\/p>\n

Ara\u015ft\u0131rmac\u0131lar ke\u015ffin, Homo Sapiens\u2019ten farkl\u0131 olarak y\u00fcz \u015feklimizi etkileyen ikinci DNA ke\u015ffi oldu\u011funu s\u00f6yl\u00fcyor. Ayn\u0131 ekip, 2021 tarihli bir makalesinde dudak \u015feklini etkileyen bir genin de eski Denisoval\u0131lardan miras kald\u0131\u011f\u0131n\u0131 ke\u015ffetmi\u015fti.<\/p>\n","protected":false},"excerpt":{"rendered":"

Burnunuzdan nefret ediyorsan\u0131z su\u00e7lu belli oldu. Yeni bir \u00e7al\u0131\u015fmaya g\u00f6re; Neandertal DNA’s\u0131 burnumuzun \u015feklinin olu\u015fmas\u0131nda rol al\u0131yor.<\/p>\n","protected":false},"author":1,"featured_media":87249,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32],"tags":[891,500,11696,11697,1624],"class_list":["post-87248","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-teknoloji","tag-arastirmacilar","tag-insan","tag-neandertal","tag-seklini","tag-yuz"],"_links":{"self":[{"href":"https:\/\/haberulus.net\/index.php?rest_route=\/wp\/v2\/posts\/87248","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/haberulus.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/haberulus.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/haberulus.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/haberulus.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=87248"}],"version-history":[{"count":1,"href":"https:\/\/haberulus.net\/index.php?rest_route=\/wp\/v2\/posts\/87248\/revisions"}],"predecessor-version":[{"id":87250,"href":"https:\/\/haberulus.net\/index.php?rest_route=\/wp\/v2\/posts\/87248\/revisions\/87250"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/haberulus.net\/index.php?rest_route=\/wp\/v2\/media\/87249"}],"wp:attachment":[{"href":"https:\/\/haberulus.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=87248"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/haberulus.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=87248"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/haberulus.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=87248"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}