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    Population Structure of the Chenchu and Other South Indian Tribal Groups: Relationships between Genetic, Anthropometric, Dermatoglyphic, Geographic, and Linguistic Distances

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    Issue Date
    1994-10
    Author
    Sirajuddin, S. M.
    Duggirala, Ravindranath
    Crawford, Michael H.
    Publisher
    Wayne State University Press
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
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    Abstract
    We describe the genetic structure and interrelationships of nine south Indian tribal groups (seven from Andhra Pradesh and two from the adjoining states of Tamil Nadu and Kerala) using seven polymorphic loci (ABO, MN, RH, PGM, ACP, PGD, and LDH). R matrix analysis indicates that the Andhra Pradesh tribes are clustered and that the Kadar and Irula are genetically isolated from them. This dispersion of populations has been explained by the combination of relatively high frequencies of the alleles RH D and MN M in the Kadar and the relatively high proportions of the allele PGM*2 in the Irula. The Mahaboobnagar Chenchu subgroup is isolated from other Telugu-speaking groups because of high frequencies of the PGM*1 and ACP*A alleles. The regression of mean per locus heterozygosity (//) on distance from the gene frequency centroid (r„) reveals considerable levels of external gene flow among the Lam-badi, the Yerukula, and the two Chenchu subgroups and more homogeneity in the Kolam, Koya, Yanadi, Irula, and Kadar. Mantel statistics were used to assess the relative effects of nonbiological processes (i.e., language and geography) on the morphological and genetic patterns of these subdivided populations. The significance of correlations was determined between different data sets (genetic, dermatoglyphic, anthropometric, geographic, and linguistic) at three levels involving nine, six, and five populations. Although multiple correlation analysis reveals significant combined effects of geography and language on genetics, anthropometrics, and dermato-glyphics, highly significant partial correlations suggest strong effects of geography on both anthropometry and genetics. Our analysis indicates that geographic factors have an overwhelming effect on the genetic differentiation of the south Indian tribal groups.
    Description
    This is the published version. Copyright 1994 Wayne State University Press.
    URI
    http://hdl.handle.net/1808/17921
    Collections
    • Anthropology Scholarly Works [206]
    • Center for Russian, East European, and Eurasian Studies Scholarly Publications [546]
    Citation
    Sirajuddin, S.m., R. Duggirala, and Michael H. Crawford. "Population Structure of the Chenchu and Other South Indian Tribal Groups: Relationships between Genetic, Anthropometric, Dermatoglyphic, Geographic, and Linguistic Distances." Human Biology 66.5 (1994): 865-84. Web. 01 June 2015.

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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