News Genetics

There’s no evidence that a single ‘gay gene’ exists

Instead, a combo of small genetic factors and environmental influences affects partner choice

gay couple

There’s no one “gay gene,” but many genetic, environmental, social and cultural factors may combine to influence sexual behavior, researchers say.

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By Tina Hesman Saey

- More than 2 years ago

Updated

Publication of the largest-ever study of the roles of genes in homosexual behavior is fanning the debate over whether being gay is due to genes or environment.