{"id":697029,"date":"2026-06-10T01:57:03","date_gmt":"2026-06-10T01:57:03","guid":{"rendered":"https:\/\/microscopemedia.com\/?p=697029"},"modified":"2026-06-10T01:57:03","modified_gmt":"2026-06-10T01:57:03","slug":"adn-de-mamut-lanos-descoperit-in-excremente-fosilizate-de-veverita-vechi-de-pana-la-700-000-de-ani","status":"publish","type":"post","link":"https:\/\/microscopemedia.com\/?p=697029","title":{"rendered":"ADN de mamut l\u00e2nos, descoperit \u00een excremente fosilizate de veveri\u021b\u0103 vechi de p\u00e2n\u0103 la 700.000 de ani"},"content":{"rendered":"<div><img decoding=\"async\" src=\"https:\/\/microscopemedia.com\/wp-content\/uploads\/2026\/06\/adn-de-mamut-lanos-descoperit-in-excremente-fosilizate-de-veverita-vechi-de-pana-la-700-000-de-ani.jpg\" class=\"ff-og-image-inserted\"><\/div>\n<p id=\"p-0\">Materialul genetic identificat are o vechime cuprins\u0103 \u00eentre 3.000 \u0219i 700.000 de ani \u0219i include ADN provenit de la mamut l\u00e2nos, lup, bizon, cal, un ghepard disp\u0103rut \u0219i sute de specii de plante.<\/p>\n<p id=\"p-1\">Autorul principal al studiului publicat mar\u021bi \u00een revista \u0219tiin\u021bific\u0103 Nature Communications, Tyler Murchie, cercet\u0103tor \u00een paleogenomic\u0103 la Universitatea McMaster, a declarat c\u0103 descoperirea ofer\u0103 o perspectiv\u0103 rar\u0103 asupra ecosistemelor care au existat \u00een nordul Americii de Nord de-a lungul sutelor de mii de ani.<\/p>\n<p id=\"p-2\">Ini\u021bial, cercet\u0103torii inten\u021bionau s\u0103 studieze microbiomul veveri\u021belor de p\u0103m\u00e2nt arctice, \u00eens\u0103 au descoperit o biodiversitate genetic\u0103 mult mai mare dec\u00e2t se a\u0219teptau. Potrivit oamenilor de \u0219tiin\u021b\u0103, aceste roz\u0103toare func\u021bioneaz\u0103 ca adev\u0103ra\u021bi \u201earhivari naturali\u201d, adun\u00e2nd \u00een vizuinile lor semin\u021be, frunze, oase, blan\u0103 \u0219i alte materiale organice.<\/p>\n<p id=\"p-3\">Unele dintre aceste galerii au fost sigilate de permafrost \u00een urm\u0103 cu sute de mii de ani, transform\u00e2ndu-se \u00een adev\u0103rate capsule ale timpului. Cercet\u0103torii au g\u0103sit chiar \u0219i un exemplar de veveri\u021b\u0103 perfect conservat, r\u0103mas \u00eenghe\u021bat \u00een vizuin\u0103 dup\u0103 ultima perioad\u0103 de hibernare.<\/p>\n<h2 id=\"chapter-0\">Recrearea caracteristicilor de mamut l\u00e2nos<\/h2>\n<p id=\"p-4\">Folosind fragmentele de ADN recuperate, echipa a reconstituit 18 genomuri mitocondriale, inclusiv \u0219ase apar\u021bin\u00e2nd unor mamu\u021bi l\u00e2no\u0219i care au tr\u0103it \u00een perioade diferite. Descoperirea ar putea contribui la \u00een\u021belegerea evolu\u021biei acestei specii disp\u0103rute \u00een urm\u0103 cu aproximativ 4.000 de ani.<\/p>\n<p id=\"p-5\">Datele genetice vor fi puse la dispozi\u021bia comunit\u0103\u021bii \u0219tiin\u021bifice, inclusiv a companiilor care studiaz\u0103 posibilitatea recre\u0103rii unor caracteristici ale mamutului l\u00e2nos prin inginerie genetic\u0103. Una dintre acestea este Colossal Biosciences, companie care \u0219i-a exprimat obiectivul de a readuce la via\u021b\u0103 tr\u0103s\u0103turi ale speciei folosind ADN \u0219i tehnici moderne de editare genetic\u0103.<\/p>\n<p id=\"p-6\">Autorii studiului lucreaz\u0103 \u00een prezent la o nou\u0103 cercetare dedicat\u0103 evolu\u021biei mamutului l\u00e2nos, pe baza informa\u021biilor genetice ob\u021binute din aceste depozite naturale neobi\u0219nuite.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Materialul genetic identificat are o vechime cuprins\u0103 \u00eentre 3.000 \u0219i 700.000 de ani \u0219i include ADN provenit de la mamut l\u00e2nos, lup, bizon, cal, un ghepard disp\u0103rut \u0219i sute de &hellip; <a href=\"https:\/\/microscopemedia.com\/?p=697029\" class=\"more-link\">Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":697030,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"Default","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts\/697029"}],"collection":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=697029"}],"version-history":[{"count":0,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts\/697029\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/media\/697030"}],"wp:attachment":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=697029"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=697029"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=697029"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}