title: Inferring population structure and demographic history using Y-STR data from worldwide populations.
abstract: The Y chromosome is one of the best genetic materials to explore the evolutionary history of human populations. Global analyses of Y chromosomal short tandem repeats (STRs) data can reveal very interesting world population structures and histories. However, previous Y-STR works tended to focus on small geographical ranges or only included limited sample sizes. In this study, we have investigated population structure and demographic history using 17 Y chromosomal STRs data of 979 males from 44 worldwide populations. The largest genetic distances have been observed between pairs of African and non-African populations. American populations with the lowest genetic diversities also showed large genetic distances and coancestry coefficients with other populations, whereas Eurasian populations displayed close genetic affinities. African populations tend to have the oldest time to the most recent common ancestors (TMRCAs), the largest effective population sizes and the earliest expansion times, whereas the American, Siberian, Melanesian, and isolated Atayal populations have the most recent TMRCAs and expansion times, and the smallest effective population sizes. This clear geographic pattern is well consistent with serial founder model for the origin of populations outside Africa. The Y-STR dataset presented here provides the most detailed view of worldwide population structure and human male demographic history, and additionally will be of great benefit to future forensic applications and population genetic studies.
authors.affiliation: CAS-MPG Partner Institute for Computational Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 200031, Shanghai, China.
authors.forename: Hongyang
authors.initials: H
authors.lastname: Xu
authors.forename: Chuan-Chao
authors.initials: CC
authors.lastname: Wang
authors.forename: Rukesh
authors.initials: R
authors.lastname: Shrestha
authors.forename: Ling-Xiang
authors.initials: LX
authors.lastname: Wang
authors.forename: Manfei
authors.initials: M
authors.lastname: Zhang
authors.forename: Yungang
authors.initials: Y
authors.lastname: He
authors.forename: Judith R
authors.initials: JR
authors.lastname: Kidd
authors.forename: Kenneth K
authors.initials: KK
authors.lastname: Kidd
authors.forename: Li
authors.initials: L
authors.lastname: Jin
authors.forename: Hui
authors.initials: H
authors.lastname: Li
mesh_terms: D041322:Chromosomes, Human, Y / Q000235:genetics*; D003710:Demography; D005789:Genealogy and Heraldry; D005828:Genetics, Population; D006801:Humans; D008297:Male; D018895:Microsatellite Repeats / Q000235:genetics*; D008969:Molecular Sequence Data; D011156:Population Density; D013997:Time Factors