Analysis of the allele frequencies of seven Y-chromosome microsatellite loci in three tuvinian populations

摘要

The allele frequency distribution of seven microsatellite loci of the nonrecombining region of the Y chromosome (Y-STRs) was analyzed in three geographically distant indigenous populations of the Tuva Republic. The populations did not differ in allele frequency distribution of the seven Y-STRs. The Y-chromosome microsatellite loci in Tuvinians showed a high diversity (H = 0.575) that was nearly identical in all three populations. The genetic distance D_dm between the three populations was low, suggesting no subdivision of the modern male population of Tuva. Estimates of the period of linear changes in D_dm showed that Y-chromosome microsatellites can be used to reconstruct evolutionary events dating back no more than 40 000-50 000 years. The problems of human population phylogeny are discussed on the basis of data on Y-chromosome STRs.