SR Gene Region

The sex-determining region (SR) of the Y chromosome contains the SRY gene. The analogous sex-determining region (SR) of the X chromosome lacks the SRY gene. An individual without any SRY gene will develop into a female. Having an SRY gene will trigger male development.

Alleles

People normally have two alleles per gene, one inherited from their mother and one inherited from their father.

X (Global)

This allele has been widespread globally for tens of thousands of years.

Y (Global)

This allele has been widespread globally for tens of thousands of years.

Allele Pairs

It is the combination of a person's pair of gene alleles that influences traits.

 Influence Female Anatomy
 Influence Shorter Height
 Influence Longer Life Span
Allele Pair People with this allele pair have female anatomy. While females tend to be shorter and live longer than males, many factors influence height and longevity, including other genes, health, and diet.
 Influence Male Anatomy
 Influence Taller Height
 Influence Shorter Life Span
Allele Pair People with this allele pair have male anatomy. While males tend to be taller and have a shorter life span than females, many factors influence height and longevity, including other genes, health, and diet.

Gene Details

The SRY gene is located on chromosome Y and encodes the protein named "Sex-determining region Y protein", which influences the reported traits.

Additional References SRY
Genetics Home Reference by the U.S. National Library of Medicine SRY
Wikipedia SRY
UniProt Q05066