The Biological Contributions Of Sexual Orientation Essay

797 Words Jul 16th, 2016 4 Pages
Sexual orientation is one of the largest sex differences in humans. While the vast majority of the population is heterosexual, there is a small portion of people that are bisexual and heterosexual, who are attracted to the same sex. According to Freberg (2015), sexual orientation is “a stable pattern of attraction to members of a particular sex (p.344).” In this research paper, I will briefly discuss the biological contributions to sexual orientation. We will first discuss the contributions of hormones to an individual’s orientation. Then after, we will highlight the brain’s structure with its linkage to sexual orientation. Lastly, we will see the role of genetics with sexual orientation. Understanding the biological contributions to sexual orientation will help reader’s have an in depth knowledge to its role in a individual’s development. The early exposure of hormones in animals and humans influences the adult sexual behavior. According to Freberg (2015), SDN-POA is “a nucleus in the preoptic area of the hypothalamus that is larger in male rats than in female rats (p.339).” The exposure to testosterone during the critical period is the reason for this sexual dimorphism. According to Mataszczyk et al. (1988), “Rats exposed to low testosterone are less likely to engage in sexual behavior with females and more likely to engage in sexual behaviors with males (as cited in Freberg, 2015, p.344).” This can also be seen in female rats with increased size of SDN-POA. Another…

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