Binciken DNA ya gano ainihin burbushin halittu masu ban mamaki

Binciken DNA ya gano ainihin burbushin halittu masu ban mamaki

Shekaru 14.000 da suka wuce, wasu gungun masu binciken kayan tarihi a kasar Sin sun gano wani babban kasusuwa a Maludong, ko Red Deer Cave, a lardin Yunnan dake kudancin kasar Sin. An gano burbushin ta hanyar haɗin gwiwar carbon da cewa sun fito ne daga Late Pleistocene, kimanin shekaru XNUMX da suka wuce - lokacin da mutanen zamani suka yi ƙaura zuwa sassa da yawa na duniya. Kogon. Wannan skullcap yana nuna halayen ɗan adam na zamani da na ɗan adam. Misali, siffar kwanyar ta yi kama da na Neanderthals, kuma kwakwalwarsa ta bayyana karami fiye da na mutanen zamani. A sakamakon haka, wasu masana ilimin ɗan adam sun yi tunanin cewa kwanyar na iya kasancewa na wani nau'in ɗan adam ne wanda ba a san shi ba wanda ya rayu har zuwa kwanan nan, ko kuma yawan jama'a na zamani da na zamani.

A shekarar 2018, tare da hadin gwiwar Xueping Ji, masanin ilmin kimiya na kayan tarihi na cibiyar kula da al'adu da kayayyakin tarihi ta Yunnan, da Bing Su na kwalejin nazarin dabbobi ta Kunming, da kwalejin kimiyyar kasar Sin, da abokan aikinsu, sun yi nasarar fitar da tsohuwar DNA daga cikin kwanyar.

Binciken kwayoyin halitta ya nuna cewa batattun zuriyar mata ta rukunin mutane na zamani, wadanda a yanzu ana samun zuriyarsu a Gabashin Asiya, yankin Indo-China da tsibiran kudu maso gabashin Asiya, inda hominid ya samo asali. a karon farko, ta hanyar jera kwayoyin halittar tsohon burbushin dan adam, da masu bincike gano cewa ɓoyayyun burbushin halittu na wani reshe na mata na zamani ne wanda wataƙila ya ba da gudummawa ga asalin ƴan asalin Amirkawa.

Duban gefen kwanyar da aka gano daga Kogon Jajayen Dear
Duban gefen kwanyar da aka gano daga Kogon Jajayen Dear. Credit: Xueping Ji

Su ka ce, "Binciken ya kuma nuna cewa a lokacin Late Pleistocene, hominids da ke zaune a kudancin Gabashin Asiya suna da ɗimbin nau'ikan kwayoyin halitta da nau'in halitta, wanda darajarsa ta fi na arewacin Gabashin Asiya a daidai wannan lokacin. Wannan ya nuna cewa mutanen farko da suka isa Gabashin Asiya sun fara zama a kudu kafin wasu su ƙaura zuwa arewa.”

"Yana da muhimmiyar shaida don fahimtar ƙaura na farko na ɗan adam."

Os masu bincike sun fi yin shirin jera wasu tsoffin DNA ɗin ɗan adam ta hanyar amfani da burbushin halittu daga Kudu maso Gabashin Asiya, musamman waɗanda suka rigaya kafin mutanen kogon Red Deer.

Su ya ce, "Wannan bayanan ba wai kawai za su taimaka mana ba da cikakken hoto na yadda kakanninmu suka yi hijira ba, har ma sun ƙunshi muhimman bayanai game da yadda mutane ke canza kamannin jikinsu ta hanyar daidaitawa da yanayin gida na tsawon lokaci, kamar bambancin launi. fata a mayar da martani. zuwa canje-canje a cikin hasken rana. bayyana."

  • Maganar Jarida:
  • Xiaoming Zhang, Xueping Ji, et al. Halin halittar ɗan adam daga Late Pleistocene na kudu maso yammacin China. Yuli 14, 2022. Halittar Halitta na Yanzu. DOI: 10.1016/j.cub.2022.06.016
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