Comparison of 79 DNA polymorphisms tested in Australians, Japanese and Papua New Guineans with those of five other human populations - PubMed (original) (raw)
Affiliations
- PMID: 7662611
Comparative Study
Comparison of 79 DNA polymorphisms tested in Australians, Japanese and Papua New Guineans with those of five other human populations
A A Lin et al. Gene Geogr. 1994 Dec.
Abstract
Seventy-nine DNA polymorphisms from 57 loci (28 genes and 29 anonymous DNA segments) have been typed in eight human populations. Here we present allele frequencies for three populations (Japanese, New Guineans, and Australians) as well as revised frequencies for a Chinese sample: allele frequencies for five additional populations (Biaka and Mbuti Pygmies, Melanesians, Chinese, and Europeans) were described previously [Bowcock et al 1991a]. Evaluation of Hardy-Weinberg equilibrium for these polymorphisms suggested that the New Guinean sample may be from a highly substructured population. Average FST value for the 79 markers (polymorphisms) was 0.147 +/- 0.011 across the eight populations: Fst values for some markers changed dramatically with the addition of three populations--in particular, Australians and New Guineans. Average heterozygosity for eight populations was 0.307 +/- 0.014. Genetic distances indicated that the Australian sample may have some European ancestry. An average linkage tree inferred from these distances suggested that the first split of modern humans was between Africans and non-Africans, while the second major split was between Australians/New Guineans and all other non-Africans. The neighbor-joining tree also separated the African populations from all others. European polymorphism ascertainment bias and European admixture appear to have influenced both estimation of population heterozygosity and tree inference.
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