{"id":448671,"date":"2026-01-10T12:56:22","date_gmt":"2026-01-10T11:56:22","guid":{"rendered":"https:\/\/www.pcnen.com\/portal\/?p=448671"},"modified":"2026-01-10T12:56:22","modified_gmt":"2026-01-10T11:56:22","slug":"polarni-medvjedi-prilagodjavaju-svoju-dnk-i-ishranu-rastucim-temperaturama","status":"publish","type":"post","link":"https:\/\/www.pcnen.com\/portal\/2026\/01\/10\/polarni-medvjedi-prilagodjavaju-svoju-dnk-i-ishranu-rastucim-temperaturama\/","title":{"rendered":"Polarni medvjedi prilago\u0111avaju svoju DNK i ishranu rastu\u0107im temperaturama"},"content":{"rendered":"<p>Istra\u017eiva\u010di sa Univerziteta u Isto\u010dnoj Angliji su otkrili da, sa promjenom klime i ishrane, \u017eivotinje \u201emijenjaju\u201d sopstvenu genetiku.<\/p>\n<p>Autori studije su analizirali uzorke krvi od ukupno 17 jedinki polarnih medvjeda \u2013 12 iz severoisto\u010dnog i pet iz jugoisto\u010dnog Grenlanda. Cilj je bio da, izme\u0111u \u017eivotinja u dva posmatrana regiona, uporede aktivnost tzv. ska\u010du\u0107ih gena, ta\u010dnije transpozona. To su male sekvence DNK koje mogu da uti\u010du na rad ostalih gena.<\/p>\n<p>Dok su temperature na sjeveroistoku Grenlanda manje sklone varijacijama i hladnije, na jugoistoku je situacija potpuno druga\u010dija: vrijeme je promjenljivo i zna\u010dajno toplije, a leda je manje. Na ovom prostoru polarni medvjedi ve\u0107 trpe sli\u010dne izazove i promjene stani\u0161ta kakvi se ovoj vrsti predvi\u0111aju u budu\u0107nosti.<\/p>\n<p>Me\u0111utim, kako je primije\u0107eno, \u017eivotinje se radikalnoj transformaciji njihove \u017eivotne sredine istovremeno i adaptiraju na geneti\u010dkom nivou,<a href=\"https:\/\/klima101.rs\/polarni-medvedi-klimatske-promene-promena-dnk\/\" target=\"_blank\" rel=\"noopener\"> pi\u0161e portal klima101.rs.<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Istra\u017eiva\u010di sa Univerziteta u Isto\u010dnoj Angliji su otkrili da, sa promjenom klime i ishrane, \u017eivotinje \u201emijenjaju\u201d sopstvenu genetiku<\/p>\n","protected":false},"author":1,"featured_media":185031,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","inline_featured_image":false,"footnotes":""},"categories":[14],"tags":[],"class_list":["post-448671","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vijesti"],"_links":{"self":[{"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/posts\/448671","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/comments?post=448671"}],"version-history":[{"count":1,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/posts\/448671\/revisions"}],"predecessor-version":[{"id":448674,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/posts\/448671\/revisions\/448674"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/media\/185031"}],"wp:attachment":[{"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/media?parent=448671"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/categories?post=448671"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/tags?post=448671"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}