The Genetic History of Ice Age Europe 在线电子书 pdf 下载 txt下载 epub 下载 mobi 下载 2024

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QiaoMei Fu 作者

Harvard University

译者

2016-11 出版日期

78 页数

0 价格

Paperback

丛书系列

9780711109643 图书编码

The Genetic History of Ice Age Europe 在线电子书图书标签: 分子生物学世界史前史

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发表于2024-11-08

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The Genetic History of Ice Age Europe 在线电子书 epub 下载 mobi 下载 pdf 下载 txt 下载 2024

The Genetic History of Ice Age Europe 在线电子书 pdf 下载 txt下载 epub 下载 mobi 下载 2024

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Modern humans arrived in Europe ~45,000 years ago, but little is known about their genetic composition before the start of farming ~8,500 years ago. Here we analyse genome-wide data from 51 Eurasians from ~45,000–7,000 years ago. Over this time, the proportion of Neanderthal DNA decreased from 3–6% to around 2%, consistent with natural selection against Neanderthal variants in modern humans. Whereas there is no evidence of the earliest modern humans in Europe contributing to the genetic composition of present-day Europeans, all individuals between ~37,000 and ~14,000 years ago descended from a single founder population which forms part of the ancestry of present-day Europeans. An ~35,000-year-old individual from northwest Europe represents an early branch of this founder population which was then displaced across a broad region, before reappearing in southwest Europe at the height of the last Ice Age ~19,000 years ago. During the major warming period after ~14,000 years ago, a genetic component related to present-day Near Easterners became widespread in Europe. These results document how population turnover and migration have been recurring themes of European prehistory.

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