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Sex determination in humans

A J Schafer1, P N Goodfellow

  • 1Department of Genetics, University of Cambridge, UK.

Bioessays : News and Reviews in Molecular, Cellular and Developmental Biology
|December 1, 1996
PubMed
Summary
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The Y chromosome

Area of Science:

  • Mammalian genetics
  • Developmental biology
  • Sex determination

Background:

  • Mammalian sex determination is initiated by the Y chromosome, inducing testis formation.
  • In the absence of a Y chromosome, female development occurs with ovary differentiation.

Purpose of the Study:

  • To elucidate the genetic hierarchy and interactions in mammalian sex determination.
  • To understand the roles of specific genes in gonadal development.

Main Methods:

  • Molecular genetic studies
  • Analysis of gene mutations and expression patterns
  • Comparative genomics

Main Results:

  • Identification of the Y-located testis-determining gene SRY.

Related Experiment Videos

  • Discovery of autosomal and X-linked genes crucial for gonadal development.
  • Characterization of gene interaction networks.

    • Conclusions:

    • A hierarchical gene network governs mammalian sex determination.
    • SRY and other identified genes play critical roles in initiating male or female development.
    • Understanding these pathways is key to comprehending gonadal differentiation.