MBE Advance Access published online on October 31, 2003
Molecular Biology and Evolution, doi:10.1093/molbev/msh009
Molecular Biology and Evolution © Society for Molecular Biology and Evolution 2003; all rights reserved
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1 Department of Anthropology, University of Arizona, Tucson, Arizona 85721
* To whom correspondence should be addressed. E-mail: mfh{at}u.arizona.edu.
A total of 63 binary polymorphisms and 10 STRs were genotyped on a sample of 2,344 Y chromosomes from 18 Native American, 28 Asian, and 5 European populations to investigate the origin(s) of Native American paternal lineages. All three of Greenberg's major linguistic divisions (including 342 Amerind speakers, 186 Na-Dene speakers, and 60 Aleut-Eskimo speakers) were represented in our sample of 588 Native Americans. SNP analysis indicated that three major haplogroups, denoted as C, Q, and R, accounted for nearly 96% of Native American Y chromosomes. Haplogroups C and Q were deemed to represent early Native American founding Y-chromosome lineages; however, most haplogroup R lineages present in Native Americans most likely came from recent admixture with Europeans. Although different phylogeographic and STR diversity patterns for the two major founding haplogroups previously led to the inference that they were carried from Asia to the Americas separately, the hypothesis of a single migration of a polymorphic founding population better fits our expanded database. Phylogenetic analyses of STR variation within haplogroups C and Q traced both lineages to a probable ancestral homeland in the vicinity of the Altai Mountains in Southwest Siberia. Divergence dates between the Altai plus North Asians versus the Native American population system ranged from 10,100 to 17,200 years for all lineages, precluding a very early entry into the Americas. Key Words:
Native Americans, Y chromosome SNPs and STRs, divergence dates, single migration, Altai Mountains
© 2003 Society for Molecular Biology and Evolution
Original Articles
High Resolution SNPs and Microsatellite Haplotypes Point to a Single, Recent Entry of Native American Y Chromosomes into the Americas
2 Division of Biotechnology, University of Arizona, Tucson, Arizona 85721; Institute of Cytology and Genetics, Novosibirsk, 650090, Russia
3 Vavilov Institute of General Genetics, Russian Academy of Sciences, Moscow 117809, Russia
4 Department of Anthropology, University of Arizona, Tucson, Arizona 85721; Division of Biotechnology, University of Arizona, Tucson, Arizona 85721
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