It was identical twin studies of homosexual humans that put the nail in the coffin of the “born homosexual” claim - when they found so many homosexuals who's identical twin was heterosexual. (Even though our leftwing corrupted media & institutions do their best to ignore that proven truth.)
Still haven’t gotten over the death of our beloved Zoe. It’s been 10 years. Now that I have the money I’d do it in a heartbeat. To each his own. The dogs temperament I understand can be duplicated in this process. The research aspect is never-ending which is good. An abused dog could come back as a well adjusted one. That would be worth seeing.