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Red cell enzyme polymorphisms in the Yoruba.

R O Ojikutu, G T Nurse, T Jenkins

    Human Heredity
    |January 1, 1977
    PubMed
    Summary
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    Genetic analysis of Yoruba populations reveals distinct red cell enzyme profiles, closely matching Southern African Negroes but contrasting with San (

    Area of Science:

    • Population genetics
    • Human genetics
    • Anthropology

    Background:

    • Investigating genetic variation in African populations is crucial for understanding human migration and adaptation.
    • Red cell enzyme polymorphisms serve as valuable genetic markers for population studies.

    Purpose of the Study:

    • To investigate the genetic variation in 17 red cell enzyme systems among the Yoruba population of western Nigeria.
    • To compare these genetic profiles with other African populations, specifically Southern African Negroes and San ('Bushmen').

    Main Methods:

    • Analysis of 17 red cell enzyme systems in the Yoruba population.
    • Comparison of observed genetic variations with existing data from Southern African Negroes and San populations.

    Main Results:

    Related Experiment Videos

    • Nine of the 17 red cell enzyme systems were found to be non-polymorphic in the Yoruba.
    • Eight polymorphic systems showed a close resemblance to Southern African Negroes and a marked contrast to the San.
    • Genetic patterns suggest limited impact of urbanization and minimal selective forces or drift since ancestral separation.

    Conclusions:

    • The investigated red cell enzyme polymorphisms are likely irrelevant to adaptation to urban conditions.
    • Limited selective forces and genetic drift have acted on these polymorphisms since the divergence of these populations.
    • The Khoisan genetic contribution to the Southern African Negro gene pool may be less uniform than previously assumed.