Cultural hitchhiking and competition between patrilineal kin groups explain the post-Neolithic Y-chromosome bottleneck

Tian Chen Zeng, Alan J. Aw and Marcus W. Feldman ()
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Tian Chen Zeng: Stanford University
Alan J. Aw: Stanford University
Marcus W. Feldman: Stanford University

Nature Communications, 2018, vol. 9, issue 1, 1-12

Abstract: Abstract In human populations, changes in genetic variation are driven not only by genetic processes, but can also arise from cultural or social changes. An abrupt population bottleneck specific to human males has been inferred across several Old World (Africa, Europe, Asia) populations 5000–7000 BP. Here, bringing together anthropological theory, recent population genomic studies and mathematical models, we propose a sociocultural hypothesis, involving the formation of patrilineal kin groups and intergroup competition among these groups. Our analysis shows that this sociocultural hypothesis can explain the inference of a population bottleneck. We also show that our hypothesis is consistent with current findings from the archaeogenetics of Old World Eurasia, and is important for conceptions of cultural and social evolution in prehistory.

Date: 2018
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DOI: 10.1038/s41467-018-04375-6

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