Bilim d\u00fcnyas\u0131nda, evrim kavram\u0131 y\u00fczy\u0131llard\u0131r bir hayranl\u0131k ve tart\u0131\u015fma konusu olmu\u015ftur. Evrim anlay\u0131\u015f\u0131m\u0131za katk\u0131da bulunan bir\u00e7ok bilim insan\u0131 aras\u0131nda Thomas Henry Huxley \u00f6nemli bir yere sahiptir. Huxley, dinozorlar ve ku\u015flar aras\u0131ndaki ba\u011flant\u0131y\u0131 ortaya koymada, do\u011fal d\u00fcnyaya ili\u015fkin alg\u0131m\u0131z\u0131 sonsuza dek de\u011fi\u015ftiren \u00e7\u0131\u011f\u0131r a\u00e7an bir teoride merkezi bir rol oynam\u0131\u015ft\u0131r.<\/p>\n\n
Huxley’in evrimsel bilime yolculu\u011fu, do\u011fal se\u00e7ilim teorisinin babas\u0131 Charles Darwin ile olan dostlu\u011fuyla ba\u015flad\u0131. Darwin’in \u00e7\u0131\u011f\u0131r a\u00e7an eseri “T\u00fcrlerin K\u00f6keni”ni okuduktan sonra Huxley, evrimsel ilkelerin ate\u015fli bir savunucusu haline geldi. Ancak Huxley’in evrime ili\u015fkin kendi yorumu, baz\u0131 y\u00f6nlerden Darwin’inkinden farkl\u0131yd\u0131.<\/p>\n\n
Uzun zaman dilimleri boyunca do\u011fal se\u00e7ilimin kademeli olarak ger\u00e7ekle\u015fti\u011fine inanan Darwin’in aksine Huxley, evrimin “saltasyonlar” olarak bilinen ani, b\u00fcy\u00fck \u00f6l\u00e7ekli mutasyonlarla da meydana gelebilece\u011fini \u00f6ne s\u00fcrd\u00fc. Bu bak\u0131\u015f a\u00e7\u0131s\u0131ndaki fark, Huxley’in evrim \u00e7al\u0131\u015fmas\u0131na yakla\u015f\u0131m\u0131n\u0131 etkiledi.<\/p>\n\n
Huxley’in \u00f6zel ilgi alan\u0131, dinozorlar ve ku\u015flar aras\u0131ndaki ba\u011flant\u0131yd\u0131. \u0130ki grup aras\u0131nda, \u00f6zellikle iskelet yap\u0131lar\u0131nda anatomik benzerlikler oldu\u011funu fark etti. Alman evrimci Ernst Haeckel’in \u00e7al\u0131\u015fmalar\u0131ndan esinlenerek Huxley, dinozorlar\u0131n ku\u015flar\u0131n atalar\u0131 oldu\u011fu bir hipotez geli\u015ftirmeye ba\u015flad\u0131.<\/p>\n\n
Huxley’in hipotezi, giderek artan bir paleontolojik kan\u0131tlar g\u00f6vdesi taraf\u0131ndan desteklendi. 19. y\u00fczy\u0131l\u0131n sonlar\u0131nda, bilim insanlar\u0131 Sinosauropteryx ve Archaeopteryx gibi t\u00fcyl\u00fc dinozorlar ke\u015ffetmeye ba\u015flad\u0131lar. Bu fosiller, iki grup aras\u0131nda somut bir ba\u011flant\u0131 sa\u011flayarak Huxley’in tahminlerini do\u011frulad\u0131.<\/p>\n\n
Huxley’in teorisine g\u00f6re ku\u015flar, k\u00fc\u00e7\u00fck, y\u0131rt\u0131c\u0131 dinozorlardan evrimle\u015fmi\u015ftir. Bu dinozorlar, t\u00fcyler, kanatlar ve hafif bir iskelet gibi ku\u015f benzeri \u00f6zellikler geli\u015ftirmi\u015ftir. Zamanla, bu uyarlamalar onlar\u0131n g\u00f6ky\u00fcz\u00fcne y\u00fckselmelerine izin verdi.<\/p>\n\n
Huxley, fosil kay\u0131tlar\u0131n\u0131n dinozordan ku\u015fa ge\u00e7i\u015fe dair eksiksiz bir tablo sunmad\u0131\u011f\u0131n\u0131 fark etti. Ge\u00e7i\u015f bi\u00e7imlerinin \u00e7o\u011funun, kal\u0131nt\u0131lar\u0131n\u0131 koruyabilecek kayalar\u0131n olu\u015fumundan \u00f6nceki “jeolojik olmayan zaman”da var oldu\u011funu \u00f6ne s\u00fcrd\u00fc.<\/p>\n\n
Huxley’in dinozor-ku\u015f ba\u011flant\u0131s\u0131 konusundaki \u00e7al\u0131\u015fmas\u0131, evrimsel bilimde b\u00fcy\u00fck bir at\u0131l\u0131md\u0131. Evrim teorisinin, D\u00fcnya’daki ya\u015fam \u00e7e\u015fitlili\u011fi i\u00e7in inand\u0131r\u0131c\u0131 bir bilimsel a\u00e7\u0131klama olarak yerle\u015fmesine yard\u0131mc\u0131 oldu. Huxley’in, do\u011frudan atalar ile bu atalar\u0131n beklenen formunu temsil eden yarat\u0131klar\u0131 ay\u0131rt etme konusundaki \u0131srar\u0131, g\u00fcn\u00fcm\u00fcz paleontolojisinde hala bir yol g\u00f6sterici ilkedir.<\/p>\n\n
Sonraki ara\u015ft\u0131rmalar, Huxley’in hipotezini daha da destekledi. \u00c7ok say\u0131da t\u00fcyl\u00fc dinozor \u00f6rne\u011finin ke\u015ffi, bu iki grup aras\u0131ndaki ba\u011flant\u0131y\u0131 sa\u011flamla\u015ft\u0131rd\u0131. Bug\u00fcn, ku\u015flar\u0131n yaln\u0131zca dinozorlar\u0131n soyundan gelmedi\u011fini, ayn\u0131 zamanda bir t\u00fcr dinozorun kendisi oldu\u011funu biliyoruz.<\/p>\n\n
Huxley bug\u00fcn ya\u015f\u0131yor olsayd\u0131, dinozor-ku\u015f ba\u011flant\u0131s\u0131n\u0131 anlamada kaydedilen ilerlemeden \u015f\u00fcphesiz b\u00fcy\u00fclenirdi. Yeni kan\u0131tlar bollu\u011fu, \u00f6nc\u00fc fikirlerini do\u011frulad\u0131 ve ku\u015flar d\u00fcnyas\u0131n\u0131n do\u011fu\u015funa yol a\u00e7an ola\u011fan\u00fcst\u00fc evrimsel yolculu\u011fa olan takdirimizi derinle\u015ftirdi.<\/p>","protected":false},"excerpt":{"rendered":"
Thomas Henry Huxley ve Dinozor-Ku\u015f Ba\u011flant\u0131s\u0131 Evrim ve Ku\u015flar\u0131n K\u00f6keni Bilim d\u00fcnyas\u0131nda, evrim kavram\u0131 y\u00fczy\u0131llard\u0131r bir hayranl\u0131k ve tart\u0131\u015fma konusu olmu\u015ftur. Evrim anlay\u0131\u015f\u0131m\u0131za katk\u0131da bulunan bir\u00e7ok bilim insan\u0131 aras\u0131nda Thomas…<\/p>\n","protected":false},"author":1,"featured_media":23672,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[288],"tags":[134,2546,136,930,137,8158],"class_list":["post-4495","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-biology","tag-dinosaurs","tag-natural-selection","tag-evolution","tag-birds","tag-paleontology","tag-thomas-henry-huxley"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/posts\/4495","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/comments?post=4495"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/posts\/4495\/revisions"}],"predecessor-version":[{"id":4496,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/posts\/4495\/revisions\/4496"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/media\/23672"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/media?parent=4495"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/categories?post=4495"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/tags?post=4495"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}