Izazinzulu zityhila iimfihlo zomlibo wokuzalwa kwe-mammoths ukusuka kwixesha lokuma ngenxa yeDNA endala emhlabeni

Anonim

Izazinzulu zityhila iimfihlo zomlibo wokuzalwa kwe-mammoths ukusuka kwixesha lokuma ngenxa yeDNA endala emhlabeni 16670_1
Commons.wimdia.org.

Izazinzulu zikhokelwa ngu-lava dahnta omele iziko le-Paleontology yeYunivesithi yaseStockholm ityhila iimfihlo ze-mammoti ukusuka kwi-mammotis ye-mammoti. Kunokwenzeka ukuba uphumeze lo mbulelo kwi-DNA endala kwihlabathi elifunyenwe kwi-carcass izilwanyana zakudala ezifumaneka kwiqabaka laseSiberLot.

Abaphandi bakwazi ukukhupha i-mammoti dna evela kumazinyo emveli abameli beendlovu. Ubudala obufumana izinto zemvelo zineminyaka eli-1,2200. Kude kube kufumaneke iDNA yakudala yeDNA, i-DNA yehashe elifudumeleyo kwi-Yukon yanamhlanje (eCanada) yaqwalaselwa kwi-560-780 kwiminyaka engamawaka eminyaka eyadlulayo.

Iqela lamazwe aphesheya lezazinzulu lilandelelane neesampulu ezintathu ezifumanekayo ukuze kufundwe usapho lomthi we-mammoti.

Umahluko kwizinto zemvelo zibonise ukuba izidalwa ze-fangs zazivela njani xa i-iceng rigs igubungele i-fisphete egutyungelwe i-hemisphere yasemantla kwaye yatyhila i-mammoths engaziwayo eyakhe yabhadula intshona Melika.

"Ngale DNA yeGigantic, ungayibona ngokuthe ngqo indibano yeYunivesithi ye-Illinois e-Urbane-Champane Alfred Roca. Utshintsho kwi-genome bukhali, yintoni ebangela ukuba ikwazi ukuqonda ukuba i-Evelooy iguqukayo ngokuthe ngcembe iguqukayo iphawulwe ngokupheleleyo yingcali. Iingcali ze-friendollogists Imyuziyam yaseBritane yeSayensi yeNdalo icacisiweyo: I-Arctic Perzlotlot Gernelot igcina ukuya kwizigidi ezili-10 zamathambo ezigidi zeenyosi. Emva kokukhuphela i-ice, ezinye izidumbu azitshatyalaliswa kwaye uboya kunye neendwangu ziyasebenza. Kwizixhobo ezinjalo, iingcali kwaye zisuse i-DNA ukufumana uphando olongezelelekileyo ukuze ufunde iinkcukacha ezingakumbi ngobomi kunye nendawo yokuhlala yeMammoths.

Uhlalutyo lweesampulu ze-DNA ezifunyenwe kwi-carcass yezilwanyana zakudala ezifumaneka kwintsimi yasempuma yeSibesha ngo-1970 ibonisa ukuba i-steppe mammmoth mammmoth-quochne i-epoech e-Epoch kwi-Epostocene e-Eposi. Ukukhula kwe-steppe mammoti yayiziimitha ezi-4 7 kunye nobude bebhiya zaziphantse zibe ziimitha ezi-5. I-Mammoti esemhlophe yayinguMammustius Prignius yaya kuba ngumnini weDNA yesithathu. Iqela lezinzululwazi lafumanisa ukuba i-steppe mammoti enye yeqela lakhe labantu laguqukayo laguquka laba yimo kaMammustius. Intloko yomsebenzi kaGqr. I-Dalien ayizigatyanga i-hypothesis malunga nobukho beentlobo ezimbini ezahlukeneyo zemammoti.

Njengenxalenye yolunye uphononongo, iingcali kwiYunivesithi yaseJapan i-kindai izamile "ukubuyela ebomini" izilwanyana ezinkulu ze-ice iminyaka yobudala. Bayisebenzisa i-DNA yeMammoth echonge eSiberia malunga ne-28 yamawaka eminyaka ubudala kwaye wazisa ngezinto zemvelo kwiiseli zeerode. Ngenxa yomonakalo onzima, imfuza yayingafanelekanga ukusebenza ngokupheleleyo - hayi uphawu olunye lomsebenzi we-molecular wafumanisa ukuba uQinisekiso lweSulko lwalunikezelwa. Uthando lwe-dalien alukholelwanga ekusebenzeni kweenzame zokuzama ukuvuselela i-mammoths kwaye ingenzi ngokulinganayo kuvavanyo olunjalo.

Funda ngokugqithisileyo