The corolary is that while there may not be one gay gene, about half of the variability is inherited.
Actually, the variability has now been confirmed to be less tha 39%. The percentage is going down.
Read this article at
It shows, along with the other scientific studies, that homosexuality is not "genetic."
And if that BS were true, you'd see consistent findings from the dozens of MZ "twins-studies". But you don't, you see data range from 0% to the high 70's% concordance rates.
If the twins studies prove anything it's that the practice of perversion in NOT inherited, if it were the "studies" could be replicated.