the population history of northeastern siberia since the pleistocene pdf epub mobi txt 電子書 下載 2024


the population history of northeastern siberia since the pleistocene

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Martin Silkora
BioRixv
2018-10-22
40
USD 30.00
Hardcover
9788137011809

圖書標籤: 分子生物學   


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      发表于2024-06-25

      the population history of northeastern siberia since the pleistocene epub 下載 mobi 下載 pdf 下載 txt 電子書 下載 2024

      the population history of northeastern siberia since the pleistocene epub 下載 mobi 下載 pdf 下載 txt 電子書 下載 2024

      the population history of northeastern siberia since the pleistocene pdf epub mobi txt 電子書 下載 2024



      圖書描述

      Far northeastern Siberia has been occupied by humans for more than 40 thousand

      years. Yet, owing to a scarcity of early archaeological sites and human remains, its

      population history and relationship to ancient and modern populations across Eurasia

      and the Americas are poorly understood. Here, we analyze 34 ancient genome

      sequences, including two from fragmented milk teeth found at the ~31.6 thousand-yearold (kya) Yana RHS site, the earliest and northernmost Pleistocene human remains

      found. These genomes reveal complex patterns of past population admixture and

      replacement events throughout northeastern Siberia, with evidence for at least three

      large-scale human migrations into the region. The first inhabitants, a previously

      unknown population of “Ancient North Siberians” (ANS), represented by Yana RHS,

      diverged ~38 kya from Western Eurasians, soon after the latter split from East Asians.

      Between 20 and 11 kya, the ANS population was largely replaced by peoples with

      ancestry related to present-day East Asians, giving rise to ancestral Native Americans

      and “Ancient Paleosiberians” (AP), represented by a 9.8 kya skeleton from Kolyma

      River. AP are closely related to the Siberian ancestors of Native Americans, and

      ancestral to contemporary communities such as Koryaks and Itelmen. Paleoclimatic

      modelling shows evidence for a refuge during the last glacial maximum (LGM) in

      southeastern Beringia, suggesting Beringia as a possible location for the admixture

      forming both ancestral Native Americans and AP. Between 11 and 4 kya, AP were in

      turn largely replaced by another group of peoples with ancestry from East Asia, the

      “Neosiberians” from which many contemporary Siberians derive. We detect gene flow

      events in both directions across the Bering Strait during this time, influencing the

      genetic composition of Inuit, as well as Na Dene-speaking Northern Native Americans,

      whose Siberian-related ancestry components is closely related to AP. Our analyses

      reveal that the population history of northeastern Siberia was highly dynamic

      throughout the Late Pleistocene and Holocene. The pattern observed in northeastern

      Siberia, with earlier, once widespread populations being replaced by distinct peoples,

      seems to have taken place across northern Eurasia, as far west as Scandinavia.

      the population history of northeastern siberia since the pleistocene 下載 mobi epub pdf txt 電子書

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