To ensure the survival of mankind reproduction is necessary. Homosexuality doesn’t allow for reproduction. History goes on to forever show that heterosexuality is the dominant sexual orientation. A pyschobiologist would agree that homosexuality is similar to sterilization therefore; some cultures may condemn homosexuality. Whether a person agrees to disagree with the ideas of homosexuality; the same questions are always present—where did homosexuality originate from or are people born gay or is being gay sociologically influenced. In other words, what makes people gay? Robert Zunzig’s article “Finding the Switch”, examines the answers to these questions.

        According to Kunzig, history tried proving that homosexuality was a psychological problem caused by bad parental skills or being a parent who is too emotionally involved or not involved in a child’s life at all. An example of this would be having an overassertive mother and an incompetent father or a controlling mother and a harsh father. The American Psychiatric Association agreed that homosexuality was a mental condition which could be cured. But what really makes a person gay—is it genetics—maybe, maybe not. If one was born with a twin brother or sister—is it truly impossible for one twin to be homosexual and the other to be heterosexual? No, it is not impossible. There is no evidence linking homosexuality to DNA however, there maybe a link between homosexuality and hormones. The lack of testosterone release during fetal development may cause male newborns to grow up to having less male character traits and some female character traits. The article also mentioned that sexual antagonistic selection, (the survival one trait in one sex because it is useful to the other sex), allowed for female genetics to be mixed up male genetics. Researchers even agreed that this genetic mix up or sexual selection have caused males to show common female characteristics. Such characteristics include being more sympathetic, temperate, caring and not as forceful.  

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        In another research, researchers proposed that homosexuality is linked to DNA chromosomes. Researches suggested that homosexuality is passed down from mother to child via the X chromosomes. To confirm this idea, the researchers created separate family trees for both heterosexual males and homosexual males. The purpose this research was to determine the numbers of homosexual relatives are in each group’s (homosexual and heterosexuals) family. The study concluded that homosexual males had more homosexual relatives on their mother’s side of the family as oppose to their father’s side of the family. In addition to this research, a European researcher completed a ...

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