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Genetic variation in India

S S Papiha1

  • 1Department of Human Genetics, University of Newcastle upon Tyne, England.

Human Biology
|October 1, 1996
PubMed
Summary
This summary is machine-generated.

Genetic studies in India reveal low differentiation overall, but higher levels in mixed and tribal groups. Geographic proximity and cultural factors significantly influence genetic affinity among Indian populations.

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Area of Science:

  • Population Genetics
  • Human Biology
  • Anthropology

Background:

  • Numerous genetic studies on Indian subcontinent populations over 25 years.
  • Limited studies address genetic differentiation and population structure across diverse groups.
  • Previous findings on genetic affinity and sociocultural hierarchy in Eastern India are debated.

Purpose of the Study:

  • To analyze genetic differentiation and population structure in Indian groups.
  • To investigate determinants of genetic affinity, including geography and culture.
  • To synthesize findings from multiple surveys on Indian genetic diversity.

Main Methods:

  • Analysis of genetic differentiation using FST values.
  • Comparison of genetic data across regional caste, tribal, religious, and urban groups.

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  • Review of existing literature and presentation of new survey results.

    • Main Results:

    • Overall genetic differentiation in Indian populations is generally low (0.26-1.7%).
    • Higher genetic differentiation observed in mixed populations (2.23%) and tribal groups (2.18%).
    • South Indian tribal populations and the Dhangar caste group exhibit the highest FST values (4.1%).

    Conclusions:

    • Geographic proximity, ethnohistory, and cultural affiliation are key determinants of genetic affinity.
    • Low genetic differentiation suggests historical gene flow, but isolation may explain high FST in specific groups.
    • Further research is needed to elucidate the causes of high genetic differentiation in certain Indian populations.