1.)Dr. Dean Hamer who failed to find a "gay gene": "Homosexuality is not purely genetic. Environmental factors play a role. There is not a single master gene that makes people gay. I don't think that we will ever be able to predict who will be gay." 2.) Dr. Dean Hamer was asked by Scientific American if homosexuality was rooted solely in biology. He replied: "Absolutely not. From twin studies we already know that half or more of the variability in sexual orientation is not inherited. Our studies try to pinpoint the genetic factors, not negate the psychosocial factors." ("New Evidence...
