Genomic variation in seven Khoe-San groups reveals adaptation and complex African history.
Genomic variation in seven Khoe-San groups reveals adaptation and complex African history.
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DOI:
10.1126/science.1227721
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发表时间:
2012-10-19
期刊:
影响因子:
--
通讯作者:
Jakobsson M
中科院分区:
文献类型:
--
作者:
Schlebusch CM;Skoglund P;Sjödin P;Gattepaille LM;Hernandez D;Jay F;Li S;De Jongh M;Singleton A;Blum MG;Soodyall H;Jakobsson M
The history of click-speaking Khoe-San, and African populations in general, remains poorly understood. We genotyped ~2.3 million single-nucleotide polymorphisms in 220 southern Africans and found that the Khoe-San diverged from other populations ≥100,000 years ago, but population structure within the Khoe-San dated back to about 35,000 years ago. Genetic variation in various sub-Saharan populations did not localize the origin of modern humans to a single geographic region within Africa; instead, it indicated a history of admixture and stratification. We found evidence of adaptation targeting muscle function and immune response; potential adaptive introgression of protection from ultraviolet light; and selection predating modern human diversification, involving skeletal and neurological development. These new findings illustrate the importance of African genomic diversity in understanding human evolutionary history.
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DOI:
10.1126/science.1172257
发表时间:
2009-05-22
期刊:
Science (New York, N.Y.)
影响因子:
--
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Williams SM
DOI:
10.1073/pnas.1119752109
发表时间:
2012-05-29
影响因子:
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通讯作者:
de Leon, Marcia S. Ponce
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