This investigation was performed to identify and evaluate the distribution of all 15 Y-chromosome lineages belonging to the Q clade in a sample of natives from South America. Methods: One hundred and forty-eight individuals from 20 Native American populations, as well as 24 Asian samples including Eskimos, were tested with 18 biallelic loci that can identify all currently known lineages of the Y-Chromosome Q clade. Sequencing was performed in part of the sample (?180,000 nucleotides, which detected, for instance, several downstream markers related to the Q1a3a lineage). Results: No new mutation was found and Q1a3a was consistently found in high frequencies in all populations, followed at a much lower frequency by Q1a3*, while Q1a3a derived-lineages are probably population/tribe/region-specific. Conclusion: The number of basal Y chromosome lineages in North America is apparently higher than in South America due probably to a bottleneck during the South American colonization and/or more recent Circum-Arctic gene flow. Am. J. Hum. Biol., 2011. copyright 2011 Wiley-Liss, Inc.
- Bisso-Machado, Rafael; Jota, Marilza S.; Ramallo, Virginia; Paix ao-C^ortes, Vanessa R.; Lacerda, Daniela R.; Salzano, Francisco M.; Bonatto, Sandro L.; Santos, Fabricio R. & Bortolini, Maria C. (2011). Distribution of Y-chromosome q lineages in native americans. American Journal of Human Biology, 23(4), 563-566.
Peoples: - | Places: - | Topics: - | DNA Type: Y-DNA