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Y CHROMOSOME

 The Y chromosome is one of the two sex chromosomes in humans (the other is the X
chromosome).
 Because only males have the Y chromosome, the genes on this chromosome tend to be involved in
male sex determination and development.
 Sex is determined by the SRY gene on the Y chromosome, which is responsible for the
development of a fetus into a male
 Genes in areas known as pseudoautosomal regions are present on both sex chromosomes. As a
result, men and women each have two functional copies of these genes. Many genes in the
pseudoautosomal regions are essential for normal development.

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