Interestingly enough, according to Dr. Dean Hamer, who authored the genetic X marker study on identical twin brothers, there is NO TEST to determine a gay gene--and there will NEVER be a definitive test.
(Dr. Dean Hamer; authored; the genetic X marker study on identical twin brothers) (NO TEST; to determine; a gay gene)
Dr. Dean Hamer NO TEST
authored to determine
the genetic X marker study on identical twin brothers
a gay gene