Archived PDF from the original on 23 March Most of the data suggests that homosexual rams, like female-oriented rams, are masculinized and defeminized with respect to mounting, receptivity, and gonadotrophin secretion, but are not defeminized for sexual partner preferences, also suggesting that such behaviors may be programmed differently. Retrieved 19 March
Hello! I am Kristina. I have 28 years old. I love porn and sex. My favorit is Voyeur, Gloryhole, Lesbian, Penetration
Do you want to fuck me?
Cross-Cultural Evidence for the Genetics of Homosexuality
One explanation for these differences is the idea that differential exposure to hormone levels in the womb during fetal development may change the masculinization of the brain in homosexual men. One possible exception was the amygdala, in which homosexual men showed greater activational differences between can you be born homosexual and nonpreferred erotic stimuli compared with heterosexual men. Another issue is the finding that even monozygotic twins can be different and there is a mechanism which might account for monozygotic twins being discordant for homosexuality. The hypothesis is consistent with other studies on homosexuality, which show that it is more prevalent amongst both siblings and twins.
Biology and sexual orientation
Some researchers state that solid scientific support for this is lacking. Some studies have seen pre-natal hormone exposures as the primary factor involved in determining sexual orientation. Please send suggestions to Mind Matters editor Gareth Cook. This hypothesis is an extension of the theory of kin selectionwhich was originally developed to explain apparent altruistic acts which seemed to be maladaptive.