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Related Experiment Videos

HLA and mate choice in humans

C Ober1, L R Weitkamp, N Cox

  • 1Center for Medical Genetics, Department of Obstetrics and Gynecology, The University of Chicago, IL 60637, USA. carole@genetics.uchicago.edu

American Journal of Human Genetics
|October 27, 1997
PubMed
Summary

Hutterite couples showed fewer human leukocyte antigen (HLA) haplotype matches than expected, suggesting mate choice avoidance of similar HLA types. This indicates a potential biological influence on mate selection in humans.

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Area of Science:

  • Immunogenetics
  • Human Evolutionary Biology
  • Population Genetics

Background:

  • Rodent studies indicate major histocompatibility complex (MHC) influences mate selection, favoring dissimilar partners.
  • The Hutterites, a North American isolate, possess a limited number of five-locus human leukocyte antigen (HLA) haplotypes, making them suitable for studying mate choice.

Purpose of the Study:

  • To investigate whether Hutterite couples avoid mating with individuals sharing the same HLA haplotype.
  • To determine if HLA haplotype similarity influences mate selection in this unique human population.

Main Methods:

  • Analyzed HLA haplotypes of 411 Hutterite couples.
  • Calculated expected HLA haplotype matches using population genotype frequencies and computer simulations incorporating Hutterite genealogy.

Related Experiment Videos

  • Compared observed HLA haplotype matches with expected values.

    • Main Results:

    • Significantly fewer HLA haplotype matches were observed between spouses than expected (P = .005 and P = .020–.067).
    • Among matched couples, the matched haplotype was more frequently inherited from the father (50 cases) than the mother (29 cases, P = .018).

    Conclusions:

    • Hutterite mate choice appears influenced by HLA haplotypes, with a demonstrated avoidance of partners having identical HLA haplotypes.
    • These findings support the hypothesis of MHC-mediated mate choice influencing human reproductive strategies.