Male Sexual Orientation Genes Identified

A study appearing in the journal Human Genetics has identified several areas of DNA that appear to influence whether a man is heterosexual or gay.

University of Illinois at Chicago researcher Brian Mustanski found stretches of DNA that appeared to be linked to sexual orientation on three different chromosomes in the nucleus of cells of the human male. “There is no one ‘gay’ gene,” said Mustanski. “Sexual orientation is a complex trait, so it’s not surprising that we found several DNA regions involved in its expression. Our best guess is that multiple genes, potentially interacting with environmental influences, explain differences in sexual orientation.”

The genomes of 456 men from 146 families with two or more gay brothers were analyzed. While earlier studies had focused solely on the X chromosome, one of the two sex chromosomes, the present study examined all 22 pairs of non-sex chromosomes in addition to the X chromosome. The other sex chromosome, called Y, was not explored. Identical stretches of DNA on three chromosomes – chromosomes 7, 8 and 10 – were found to be shared in about 60 percent of the gay brothers in the study, compared to about 50 percent expected by chance. The region on chromosome 10 correlated with sexual orientation only if it was inherited from the mother.

“Our study helps to establish that genes play an important role in determining whether a man is gay or heterosexual,” said Mustanski.

, ,

Comments are closed.

Gold Single Crystal Ingots with Orientation 99.99% Pure in Display picture

Gold Single Crystal Ingots with Orientation 99.99% Pure in Display

$655.00



Orientation for Heavy Artillery by Capt Walton C. Clark Book Guide 1918 picture

Orientation for Heavy Artillery by Capt Walton C. Clark Book Guide 1918

$108.00



Pair Vintage Porcelain Floral Medallion Design Hand Painted Oriental Style Lamps picture

Pair Vintage Porcelain Floral Medallion Design Hand Painted Oriental Style Lamps

$195.00



NAVAL ORIENTATION by Bureau of Naval Personnel Dec. 1948 picture

NAVAL ORIENTATION by Bureau of Naval Personnel Dec. 1948

$33.99



VTG ORIENTAL/ASIAN DESIGN HAT PIN HOLDER GEISHA GIRLS picture

VTG ORIENTAL/ASIAN DESIGN HAT PIN HOLDER GEISHA GIRLS

$6.20



Penn State Fall 1965 Orientation, The Pennstateman (For Male Resident Students) picture

Penn State Fall 1965 Orientation, The Pennstateman (For Male Resident Students)

$5.00



Oriental Teapot picture

Oriental Teapot

$15.00



PAINTED ORIENTAL ASIAN  ManRESIN FIGURINE STATUE picture

PAINTED ORIENTAL ASIAN ManRESIN FIGURINE STATUE

$5.50



Vintage Oriental 4 Panel Painted Screen Birds Flowers Chinese Wall Art 36x72” picture

Vintage Oriental 4 Panel Painted Screen Birds Flowers Chinese Wall Art 36x72”

$250.00



1950s Original Yugoslavia Socialist Orientation Realism Poster Work Capability picture

1950s Original Yugoslavia Socialist Orientation Realism Poster Work Capability

$59.28



Powered by WordPress. Designed by WooThemes