Genetic Evidence for Recent Population Mixture in India
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"Genetic Evidence for Recent Populat..." refers background in this paper
...Pathan Li et al.(20) 15 IndoEuropean urban groups Pakistan 32 350N, 69 720E 70....
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...Sindhi Li et al.(20) 10 IndoEuropean urban groups Pakistan 24 270N, 68 700E 64....
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1,877 citations
"Genetic Evidence for Recent Populat..." refers methods in this paper
...For f4 ratio estimation to provide unbiased results, it requires access to four outgroup populations that branch off at four distinct positions on the ancestral lineage relating ANI andASI.(26)We chose to work with Yoruba (YRI), Andamanese (Onge),(27) and two West...
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...Onge])) by using our admixture graph phylogeny testing software.(26) Within the limits of our resolution, we find six groups (Pop2 1⁄4 Italian, Tuscan, Basque, Kurd, Abhkasian, Spaniard) that are consistent with thismodel in the sense that none of the f statistics relating the groups are greater than three standard errors from...
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...We previously reported simulations showing that dating population mixture based on the scale of admixture LD is robust to the use of imperfect surrogates for the ancestral populations, fine-scale errors in the genetic map, and a history of founder events in the admixed population, and is able to provide unbiased estimates for the dates of events up to 500 generations ago.(26,28,29) We confirmed this by using new simulations with demographic parameters relevant to India (Appendix A)....
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1,457 citations
"Genetic Evidence for Recent Populat..." refers background or result in this paper
...001).(1) Our estimates of ANI ancestry are lower than we previously reported (although within two standard errors),(1) because of the fact that we previously used Papuans, Adygei, and Northwest Europeans as outgroups for ancestry estimation, whereas here we use YRI, Basque, and Georgians (Figure S1, Table S4)....
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...To identify sets of Indian groups consistent with having the same relationship to the panel of non-Indians, we use a Hotelling T test as in Reich et al.31 to evaluate whether thematrix of all f4 statistics has exactly one linearly independent component (rank 1)....
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...Vysya Reich et al.(1) and this study 14 (10) Dravidian middle caste Andhra Pradesh 14 410N, 77 390E 37....
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...Our ancestry estimates are also statistically consistent (within two standard errors) with those of Reich et al.1 (Table S4)....
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...We tested this null hypothesis (rank ¼ 0) with a Hotelling T test as described in Reich et al.31 Our simulations show that this test has power to detect a history of multiple ancestral ANI populations even when they are closely related and that genetic drift in the admixed groups cannot increase the rank (Appendix C)....
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