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Related Experiment Videos

H-Y evolution

P Pechan, M Tracey

    Experientia
    |March 15, 1980
    PubMed
    Summary
    This summary is machine-generated.

    Female mice immunized with male spleen preparations produced litters with a 2:1 female:male ratio, with males stillborn. This suggests the H-Y antigen

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    Area of Science:

    • Immunology
    • Developmental Biology
    • Genetics

    Background:

    • The genetic basis of sex determination is a fundamental question in biology.
    • The H-Y antigen has been implicated in mammalian sex determination.
    • Previous studies have suggested a role for the H-Y antigen in mammalian testicular development.

    Purpose of the Study:

    • To investigate the role of the H-Y antigen in sex determination.
    • To examine the effects of H-Y antigen immunization on mammalian reproductive outcomes.
    • To explore the evolutionary conservation of the H-Y antigen's function.

    Main Methods:

    • Immunization of female C57 black mice with male spleen preparations.
    • Analysis of sex ratios and stillbirth rates in offspring.

    Related Experiment Videos

  • H-Y antigen typing of Drosophila busckii males.

    • Main Results:

    • Litters from immunized mice showed a skewed female:male sex ratio (2:1).
    • A significant proportion of male offspring were stillborn.
    • Drosophila busckii males were confirmed to be H-Y antigen positive.

    Conclusions:

    • The H-Y antigen is proposed as the primary determinant of testicular development.
    • The findings support an evolutionarily ancient role for the H-Y antigen in sex determination.
    • Immunological manipulation can impact sex determination, highlighting the antigen's critical role.