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Nature:青铜器时代欧亚大陆的人口变化

摘要 : 青铜器时代是否是由于思想传播或大规模人口迁移而出现的重大文化变革时期?作者对来自欧亚大陆的101个古人的低覆盖率基因组进行了测序和分析,揭示了这一时期的大规模人口迁移和更替。

 

青铜器时代是否是由于思想传播或大规模人口迁移而出现的重大文化变革时期?作者对来自欧亚大陆的101个古人的低覆盖率基因组进行了测序和分析,揭示了这一时期的大规模人口迁移和更替。分析显示,浅色皮肤在青铜器时代的欧洲人当中已经较为普遍,但对乳糖的耐受性还不是很普遍,说明对后一个特征的正选择开始的时间要比以前所认为的更晚。本文所报告的这些发现也与本期Nature第207页上报告的青铜器时代早期印欧语言的传播相一致。

原文链接:

Population genomics of Bronze Age Eurasia

原文摘要:

The Bronze Age of Eurasia (around 3000–1000 BC) was a period of major cultural changes. However, there is debate about whether these changes resulted from the circulation of ideas or from human migrations, potentially also facilitating the spread of languages and certain phenotypic traits. We investigated this by using new, improved methods to sequence low-coverage genomes from 101 ancient humans from across Eurasia. We show that the Bronze Age was a highly dynamic period involving large-scale population migrations and replacements, responsible for shaping major parts of present-day demographic structure in both Europe and Asia. Our findings are consistent with the hypothesized spread of Indo-European languages during the Early Bronze Age. We also demonstrate that light skin pigmentation in Europeans was already present at high frequency in the Bronze Age, but not lactose tolerance, indicating a more recent onset of positive selection on lactose tolerance than previously thought.

来源: Nature 浏览次数:2

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