Homosexuality has a low heritability, IIRC something like 20% concordance for identical twins. If there was a gay gene you would imagine it would be higher.
Yes, that was one of the reasons I posted this. Wikipedia says even identical twins that share a placenta can differ in sexual orientation, and you don’t get more shared-genes-and-environment than that.
Homosexuality has a low heritability, IIRC something like 20% concordance for identical twins. If there was a gay gene you would imagine it would be higher.
Greg Cochrane:
Yes, that was one of the reasons I posted this. Wikipedia says even identical twins that share a placenta can differ in sexual orientation, and you don’t get more shared-genes-and-environment than that.