{"id":17529,"date":"2021-10-03T04:00:00","date_gmt":"2021-10-03T04:00:00","guid":{"rendered":"https:\/\/haberglobal.com.tr\/yasam\/hollandali-bilim-insanlarindan-tek-yumurta-ikizlerinin-gizemini-cozecek-kesif-136204"},"modified":"2021-10-03T04:00:00","modified_gmt":"2021-10-03T04:00:00","slug":"bu-bir-ilk-tek-yumurta-ikizlerinin-gizemi-cozuluyor","status":"publish","type":"post","link":"https:\/\/istanbulchannel.net\/index.php\/2021\/10\/03\/bu-bir-ilk-tek-yumurta-ikizlerinin-gizemi-cozuluyor\/","title":{"rendered":"Bu bir ilk! Tek yumurta ikizlerinin gizemi \u00e7\u00f6z\u00fcl\u00fcyor"},"content":{"rendered":"

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Yay\u0131nlanma: <\/span>

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Biyolojik psikolog Jenny van Dongen ve Amsterdam \u00d6zg\u00fcr \u00dcniversitesi’nden Prof. Dr. Dorret Boomsma liderli\u011findeki uzmanlar\u0131n elde etti\u011fi bulgular\u0131n, do\u011fum kusurlar\u0131 ara\u015ft\u0131rmalar\u0131 i\u00e7in b\u00fcy\u00fck \u00f6nem ta\u015f\u0131yor.<\/p>\n

Natura Communications adl\u0131 bilim dergisinde yay\u0131mlanan \u00e7al\u0131\u015fma, Hollanda, \u0130ngiltere, Finlandiya ve Avusturya’da 6 binden fazla ikizin DNA’s\u0131 incelenerek ger\u00e7ekle\u015ftirildi.<\/p>\n

Tek yumurta ikizleri, zigot ad\u0131 verilen d\u00f6llenmi\u015f bir yumurtan\u0131n tamamen ayn\u0131 genleri payla\u015fan iki embriyoya ayr\u0131lmas\u0131 sonucu olu\u015fuyor. B\u00f6l\u00fcnmenin nedeni bilinmese de, bu biyolojik s\u00fcrecin rastgele oldu\u011fu d\u00fc\u015f\u00fcn\u00fcl\u00fcyordu.
Ancak Hollandal\u0131 bilim insanlar\u0131 \u00f6nc\u00fcl\u00fc\u011f\u00fcndeki ara\u015ft\u0131rmac\u0131lar, tek yumurta ikizlerinin DNA’s\u0131n\u0131n di\u011fer insanlardan farkl\u0131 olarak “paketlendi\u011fini” ke\u015ffetti.<\/p>\n

DNA’da y\u00fczlerce yerde metil grubu olarak adland\u0131r\u0131lan adeta bir \u00e7e\u015fit bayrak as\u0131l\u0131 oldu\u011funu belirten Prof. Dr. Boomsma, DNA’daki 800’den fazla yerde metilasyonun tek yumurta ikizlerinde, di\u011fer insanlardan farkl\u0131 oldu\u011funu saptad\u0131klar\u0131n\u0131 s\u00f6yledi.<\/p>\n

Hollandal\u0131 uzmana g\u00f6re, bu s\u00fcre\u00e7 b\u00fcy\u00fck olas\u0131l\u0131kla gebelik sonras\u0131 \u00e7ok erken ba\u015fl\u0131yor. Toplamda DNA’da tek yumurta ikizlerinin metilasyon d\u00fczeyinin di\u011fer insanlardan farkl\u0131 oldu\u011fu 834 b\u00f6lge bulunuyor.<\/p>\n

Prof. Dr. Dorret Boomsma, Hollanda Radyosu’na, bu ke\u015ffin \u00e7ok \u00f6nemli bir ad\u0131m oldu\u011funu belirterek, “Bu, genellikle \u00e7ok ciddi anormallikler olan baz\u0131 do\u011fumsal bozukluklarda tek yumurta ikizlerinin a\u015f\u0131r\u0131 derecede temsil edilmesidir” dedi.<\/p>\n

Boomsma’ya g\u00f6re elde edilen sonu\u00e7lar, ki\u015finin tek yumurta ikizi olup olmad\u0131\u011f\u0131n\u0131 ya da “kaybolan ikiz sendromu” olarak da bilinen, gebeli\u011fin erken d\u00f6neminde tek yumurta ikizini kaybedip kaybetmedi\u011fini belirlemek i\u00e7in kullan\u0131labilir.<\/p>\n

\u00c7\u00fcnk\u00fc bu sendrom, hamileli\u011fin \u00e7ok erken d\u00f6neminde de meydana gelebiliyor ve anne bunu fark etmiyor. Boomsma, ara\u015ft\u0131rma sonu\u00e7lar\u0131n\u0131n, do\u011fumda meydana gelen kusurlar\u0131n daha iyi anla\u015f\u0131lmas\u0131na y\u00fczde 80’e varan do\u011frulukla yard\u0131mc\u0131 olaca\u011f\u0131n\u0131 vurgulad\u0131.<\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

Hollandal\u0131 bilim insanlar\u0131n\u0131n liderli\u011findeki bir uluslararas\u0131 ara\u015ft\u0131rma grubu, bug\u00fcne kadar gizemi \u00e7\u00f6z\u00fclemeyen tek yumurta ikizlerinin do\u011fumu ve k\u00f6kenine ili\u015fkin ilk…<\/p>\n","protected":false},"author":2,"featured_media":17530,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[188],"tags":[],"class_list":["post-17529","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-yasam"],"_links":{"self":[{"href":"https:\/\/istanbulchannel.net\/index.php\/wp-json\/wp\/v2\/posts\/17529","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/istanbulchannel.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/istanbulchannel.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/istanbulchannel.net\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/istanbulchannel.net\/index.php\/wp-json\/wp\/v2\/comments?post=17529"}],"version-history":[{"count":0,"href":"https:\/\/istanbulchannel.net\/index.php\/wp-json\/wp\/v2\/posts\/17529\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/istanbulchannel.net\/index.php\/wp-json\/wp\/v2\/media\/17530"}],"wp:attachment":[{"href":"https:\/\/istanbulchannel.net\/index.php\/wp-json\/wp\/v2\/media?parent=17529"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/istanbulchannel.net\/index.php\/wp-json\/wp\/v2\/categories?post=17529"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/istanbulchannel.net\/index.php\/wp-json\/wp\/v2\/tags?post=17529"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}