Researchers may soon isolate the genetic roots of homosexuality. As a scientist, that excites me. But as a gay man, I worry about what might happen next.
By JEREMY YODER
JUNE 18, 20195:50 AM
… Last year, a team working with very large datasets from the U.K. Biobank and the “personal genomics” company 23andMe reported, at two different conferences, that they’ve identified about 40 genes at which different variants are associated with differences in orientation. Adding up the effects of many more genes into “polygenic scores” accounted for up to 20 percent of variation in sexual orientation—not the full genetic effect seen in twin studies, but not nothing. The collaborators haven’t published a formal peer-reviewed article yet, but it looks likely that the final, fully reported project will be solid work.
I think this is for homosexual males, not females.
J. Michael Bailey’s study of Australian twins in the 1990s found about 20-25% concordance, which is both higher than random chance but not really all that high either.
It will be interesting what other traits male homosexuality’s gene patterns will be similar to.