Scans see 'gay brain differences'
The brains of gay men and women look like those found in heterosexual people of the opposite sex, research suggests.
Gay Is Not All in the Genes
environmental influences--including the environment in the womb--may play a greater role than genes
Homosexual Behavior Largely Shaped By Genetics And Random Environmental Factors
genetics and environmental factors (which are specific to an individual, and may include biological processes such as different hormone exposure in the womb), are important determinants of homosexual behaviour.
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