Distribution of Y-chromosome q lineages in native americans

Authors

  • Rafael Bisso-Machado,

    1. Departamento de Genética, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Caixa Postal 15053, 91501-970 Porto Alegre, RS, Brazil
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  • Marilza S. Jota,

    1. Departamento de Biologia Geral, ICB, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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  • Virginia Ramallo,

    1. Departamento de Genética, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Caixa Postal 15053, 91501-970 Porto Alegre, RS, Brazil
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  • Vanessa R. Paixão-Côrtes,

    1. Departamento de Genética, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Caixa Postal 15053, 91501-970 Porto Alegre, RS, Brazil
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  • Daniela R. Lacerda,

    1. Departamento de Biologia Geral, ICB, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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  • Francisco M. Salzano,

    1. Departamento de Genética, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Caixa Postal 15053, 91501-970 Porto Alegre, RS, Brazil
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  • Sandro L. Bonatto,

    1. Centro de Biologia Genômica e Celular, Pontifícia Universidade Católica do Rio Grande do Sul, Av. Ipiranga 6681, 90610-001 Porto Alegre, RS, Brazil
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  • Fabrício R. Santos,

    1. Departamento de Biologia Geral, ICB, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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  • Maria Cátira Bortolini

    Corresponding author
    1. Departamento de Genética, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Caixa Postal 15053, 91501-970 Porto Alegre, RS, Brazil
    • Departamento de Genética, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Caixa Postal 15053, 91501-970 Porto Alegre, RS, Brazil
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Abstract

Objectives: 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. © 2011 Wiley-Liss, Inc.

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