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Massive Study Finds No Single Genetic Cause of Same-Sex Sexual Behavior - Scientific American gay genetics


“There is no 'gay gene',” says lead study author Andrea Ganna, a geneticist at the Broad Institute of MIT and Harvard in Cambridge.

Debate highlights broader concerns about tools that use the results of direct-to- consumer genetic testing.

The published study emphasizes that the genetic markers cannot be used to predict sexual behavior. Still, the work is being hailed as the most solid evidence to date linking specific genetic markers to same-sex sexual behavior. Starting in the s, scientists reported tentative.