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Epigenetics of Homosexuality [31:23] full proof that homosexuality is natural. English subs
If previously homosexuality was a subject of psychiatry, we now know that it is part of the genetic studies. Dr. Varella lectures in the XI Advanced Course on HIV Pathogenesis, on what is known so far of homosexuality on the biological point of view.
See also: Epigenetics: A promising theory that homosexuality and bisexuality have a hereditary component