Tyrannosaurus rex d\u00fcnyan\u0131n en \u00fcnl\u00fc dinozorlar\u0131ndan biridir. Bu canl\u0131, 5 metrelik bir ba\u015fa ve kemik ezici di\u015flere sahiptir ve 40 metre uzunlu\u011fundad\u0131r. Biliminsanlar\u0131, kaz\u0131 \u00e7al\u0131\u015fmalar\u0131nda elde edilen orta b\u00fcy\u00fckl\u00fckteki gen\u00e7 T. rex fosilleri \u00fczerinde yapt\u0131klar\u0131 \u00e7al\u0131\u015fma ile bu canl\u0131lar\u0131n gen\u00e7lik d\u00f6nemine ili\u015fkin bilgilere eri\u015fti.<\/p>\n
2000\u2019lerin ba\u015f\u0131nda elde edilen T. rex iskeleti \u00fczerinde \u00e7al\u0131\u015fma yapan biliminsanlar\u0131, buluntular\u0131n bir at\u0131n iki kat\u0131 uzunlu\u011fa sahip oldu\u011funu ifade etti. “Jane” ve “Petey” ismi verilen bu canl\u0131lar\u0131n incelenmesi yoluyla T. rex\u2019lerin ya\u015fam\u0131 hakk\u0131nda detayl\u0131 bilgilere ula\u015f\u0131ld\u0131.<\/p>\n
\u00c7\u0131kt\u0131lar\u0131 Science Advances isimli dergide yay\u0131nlanan \u00e7al\u0131\u015fman\u0131n y\u00fcr\u00fct\u00fcc\u00fclerinden Holly Woodward, \u201cElde edilen daha k\u00fc\u00e7\u00fck yap\u0131daki fosiller \u00fczerinde yap\u0131lan \u00e7al\u0131\u015fmalar, dinozorlar\u0131n nas\u0131l b\u00fcy\u00fcd\u00fc\u011f\u00fc konusundaki bilgilerimize yenilerini ekleyebilir. Bu konudaki bilgilerimizin geli\u015fimiyle dinozorlar\u0131n b\u00fcy\u00fcmelerine ili\u015fkin anlay\u0131\u015f\u0131m\u0131zdaki bo\u015fluklar kapanabilir. Asl\u0131nda T. rex bir istisna de\u011fil\u201d a\u00e7\u0131klamalar\u0131nda bulundu.<\/p>\n
Bu canl\u0131lar\u0131n k\u00fc\u00e7\u00fck boyutta olmalar\u0131 olduk\u00e7a \u00f6nemlidir. Biliminsanlar\u0131, T. rex\u2019ler olgunla\u015ft\u0131k\u00e7a kemiklerinin ve v\u00fccut oranlar\u0131n\u0131n nas\u0131l de\u011fi\u015fti\u011fini ara\u015ft\u0131rd\u0131 ve bu canl\u0131lar\u0131n ya\u015fam d\u00f6ng\u00fcleri hakk\u0131nda detayl\u0131 bilgilere eri\u015fti. Canl\u0131lar\u0131n bacak kemiklerinden ince kesitler alan ara\u015ft\u0131rmac\u0131lar, bu kemikleri y\u00fcksek b\u00fcy\u00fctme g\u00fcc\u00fcne sahip makineler vas\u0131tas\u0131yla analiz etti.<\/p>\n
Woodward, \u201cElinizde b\u00fcy\u00fck bir fosille\u015fmi\u015f dinozor kemi\u011finiz varsa, onun mikroskobik seviyede de fosille\u015fti\u011fini bulmak \u015fa\u015f\u0131rt\u0131c\u0131 geliyor. Elde edilen fosille\u015fmi\u015f mikro \u00f6l\u00e7ekteki yap\u0131lar\u0131, ayn\u0131 t\u00fcr\u00fcn ergin bireylerinin v\u00fccut yap\u0131lar\u0131 ile kar\u015f\u0131la\u015ft\u0131rarak metabolizma, b\u00fcy\u00fcme h\u0131z\u0131 ve ya\u015fa ili\u015fkin yeni bilgiler elde edebiliyorsunuz\u201d a\u00e7\u0131klamalar\u0131nda bulundu. Biliminsanlar\u0131, bu k\u00fc\u00e7\u00fck yap\u0131daki T. rex\u2019lerin memeliler ve ku\u015flar gibi g\u00fcn\u00fcm\u00fczde de ya\u015fayan s\u0131cakkanl\u0131 hayvanlar kadar h\u0131zl\u0131 b\u00fcy\u00fc\u011f\u00fcn\u00fc belirledi. Ara\u015ft\u0131rma s\u0131ras\u0131nda yap\u0131lan ya\u015f tayini \u00e7al\u0131\u015fmalar\u0131, Jane ve Petey’in \u00f6ld\u00fcklerinde 13 ve 15 ya\u015flar\u0131nda olduklar\u0131n\u0131 ortaya \u00e7\u0131kard\u0131. Buna g\u00f6re bu canl\u0131lar olduk\u00e7a gen\u00e7 T. rex\u2019lerdi.<\/p>\n
Ayr\u0131ca bu iki canl\u0131n\u0131n T. rex de\u011fil, daha k\u00fc\u00e7\u00fck yap\u0131daki bir dinozor t\u00fcr\u00fcne ait oldu\u011fu d\u00fc\u015f\u00fcn\u00fclmekteydi. Biliminsanlar\u0131n\u0131n yeni \u00e7al\u0131\u015fmalar\u0131, bu fosil kal\u0131nt\u0131lar\u0131n\u0131n daha c\u00fcce bir t\u00fcr olan ba\u015fka bir canl\u0131ya de\u011fil, T. rex\u2019lere ait oldu\u011funu ortaya \u00e7\u0131kard\u0131. Woodward, T. rex\u2019lerin olgunlu\u011fa eri\u015fmesinin 20 y\u0131l s\u00fcrd\u00fc\u011f\u00fcn\u00fc kaydetti. Bu canl\u0131lar\u0131n di\u015f yap\u0131lar\u0131 kesici \u00f6zellik ta\u015f\u0131yorlard\u0131, eri\u015fkin T. rex\u2019ler ise kemik k\u0131r\u0131c\u0131yd\u0131. T. rex\u2019lerin beslenme davran\u0131\u015f\u0131na da odaklanan biliminsanlar\u0131, k\u0131tl\u0131k durumunda dinozorlar\u0131n fazla b\u00fcy\u00fcmedi\u011fini ve bolluk d\u00f6nemlerinde ise b\u00fcy\u00fcmenin s\u0131n\u0131rlar\u0131 a\u015ft\u0131\u011f\u0131n\u0131 raporlad\u0131.<\/p>\n
Kaynak:<\/strong> https:\/\/phys.org\/news\/2020-01-teen-age-trex.html<\/p>\n","protected":false},"excerpt":{"rendered":" Tyrannosaurus rex d\u00fcnyan\u0131n en \u00fcnl\u00fc dinozorlar\u0131ndan biridir. Bu canl\u0131, 5 metrelik bir ba\u015fa ve kemik ezici di\u015flere sahiptir ve 40 metre uzunlu\u011fundad\u0131r. Biliminsanlar\u0131, kaz\u0131 \u00e7al\u0131\u015fmalar\u0131nda elde edilen orta b\u00fcy\u00fckl\u00fckteki gen\u00e7 T. rex fosilleri \u00fczerinde yapt\u0131klar\u0131 \u00e7al\u0131\u015fma ile bu canl\u0131lar\u0131n gen\u00e7lik d\u00f6nemine ili\u015fkin bilgilere eri\u015fti. 2000\u2019lerin ba\u015f\u0131nda elde edilen T. rex iskeleti \u00fczerinde \u00e7al\u0131\u015fma yapan biliminsanlar\u0131, […]<\/p>\n","protected":false},"author":1390,"featured_media":39548,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[19],"tags":[1488,816,3193,5726,5306],"class_list":["post-39547","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bilim-gundemi","tag-dis","tag-fosil","tag-kemik","tag-sicakkanli","tag-t-rex"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/posts\/39547","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\/1390"}],"replies":[{"embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/comments?post=39547"}],"version-history":[{"count":0,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/posts\/39547\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/media\/39548"}],"wp:attachment":[{"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/media?parent=39547"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/categories?post=39547"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/tags?post=39547"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}