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    On the number of new world founders: A population genetic portrait of the peopling of the Americas

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    On the number of New World ...
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    Genre
    Journal Article
    Date
    2005-01-01
    Author
    Hey, J
    Subject
    Asia
    Continental Population Groups
    Demography
    Ethnic Groups
    Genetic Variation
    Genetics, Medical
    Genetics, Population
    Humans
    Indians, North American
    Models, Genetic
    North America
    Population Density
    South America
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    Permanent link to this record
    http://hdl.handle.net/20.500.12613/5654
    
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    DOI
    10.1371/journal.pbio.0030193
    Abstract
    The founding of New World populations by Asian peoples is the focus of considerable archaeological and genetic research, and there persist important questions on when and how these events occurred. Genetic data offer great potential for the study of human population history, but there are significant challenges in discerning distinct demographic processes. A new method for the study of diverging populations was applied to questions on the founding and history of Amerind-speaking Native American populations. The model permits estimation of founding population sizes, changes in population size, time of population formation, and gene flow. Analyses of data from nine loci are consistent with the general portrait that has emerged from archaeological and other kinds of evidence. The estimated effective size of the founding population for the New World is fewer than 80 individuals, approximately 1% of the effective size of the estimated ancestral Asian population. By adding a splitting parameter to population divergence models it becomes possible to develop detailed portraits of human demographic history. Analyses of Asian and New World data support a model of a recent founding of the New World by a population of quite small effective size. © 2005 Jody Hey.
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    Public Library of Science (PLoS)
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    PLoS Biology
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    http://dx.doi.org/10.34944/dspace/5636
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