Nws muab cov lus qhia ntxiv txog yuav ua li cas txiv neej los ua
Tus menyuam hniav uas muaj hnub nyoog tsawg kawg yog 130,000 xyoo, pom nyob rau hauv lub qhov tsua hauv tebchaws Los Tsuas, tuaj yeem pab cov kws tshawb fawb nrhiav cov ntaub ntawv ntxiv txog ib tug kwv tij txheeb ze ntawm tib neeg, raws li kev tshawb fawb luam tawm hauv Nature Communications. Cov kws tshawb fawb ntseeg tias qhov kev tshawb pom ua pov thawj tias Denisovans - ib ceg ntawm tib neeg ploj mus - nyob hauv thaj chaw sov sov ntawm Sab Qab Teb Asia.
Tsis tshua muaj neeg paub txog Denisovans, kwv tij txheeb ze ntawm Neanderthals. Cov kws tshawb fawb thawj zaug pom lawv thaum ua haujlwm hauv lub qhov tsua Siberian xyoo 2010 thiab pom cov pob txha ntiv tes ntawm ib tug ntxhais uas yog ib pawg neeg tsis paub txog tam sim no. Siv tsuas yog av thiab sage pom nyob rau hauv Denis Cave, lawv rho tawm tag nrho cov genome ntawm pab pawg.
Tom qab ntawd xyoo 2019, cov kws tshawb fawb pom lub puab tsaig ntawm Tibetan Plateau, ua pov thawj tias qee hom tsiaj kuj nyob hauv Suav teb. Sib nrug los ntawm cov pob txha tsis tshua muaj no, tus txiv neej Denisovan tau tso tseg yuav luag tsis muaj dab tsi ua ntej nws ploj mus - tsuas yog hauv cov noob ntawm tib neeg DNA niaj hnub no. Ua tsaug rau kev sib txuas nrog Homo sapiens, qhov seem ntawm tus txiv neej Denisovan tuaj yeem pom nyob rau hauv cov neeg tam sim no nyob rau sab hnub tuaj Asia thiab Oceania. Cov neeg Aborigines thiab cov neeg hauv Papua New Guinea muaj txog li tsib feem pua ntawm DNA ntawm hom qub.
Cov kws tshawb fawb tau xaus lus tias "cov poj koob yawm txwv niaj hnub ntawm cov neeg no tau sib xyaw" nrog Denisovans nyob rau sab hnub tuaj Asia," hais tias Clement Zanoli, paleoanthropologist thiab co-sau ntawm txoj kev tshawb no. Tab sis tsis muaj "cov pov thawj ntawm lub cev" ntawm lawv qhov muaj nyob hauv thaj av Esxias sab av loj, nyob deb ntawm cov roob dej khov ntawm Siberia lossis Tibet, tus kws tshawb fawb los ntawm Fab Kis National Research Center hais rau AFP.
Qhov no yog mus txog rau thaum ib pab kws tshawb fawb pib kawm txog qhov seem ntawm lub qhov tsua Cobra nyob rau sab qaum teb sab hnub tuaj. Cov kws tshaj lij hauv qhov tsua tau tshawb pom thaj chaw hauv roob hauv xyoo 2018 nyob ib sab ntawm lub qhov tsua Tam Pa Ling, qhov chaw uas cov neeg qub qub tau pom lawm. Nws tam sim ntawd tig tawm tias cov hniav muaj "feem ntau tib neeg", Zanoli piav qhia. Txoj kev tshawb no hais tias txoj kev tshawb fawb ntawm cov proteins thaum ub qhia tau hais tias cov hniav yog tus me nyuam, tej zaum ib tug ntxhais, hnub nyoog ntawm 3.5 thiab 8.5 xyoo. Tom qab tshuaj xyuas cov hniav ntawm cov hniav, cov kws tshawb fawb ntseeg tias nws yog feem ntau Denisovans uas nyob hauv lub qhov tsua 164,000 txog 131,000 xyoo dhau los.
