Other Bailey of Northwestern University collaborated with Richard

Other studies have also found this discovery to be valid, suggesting that homosexuality could be based on the genetic markers (Homosexuality: Nature or Nurture 1). A hypothesis stating that sexual orientation is determined by the early levels of androgen, which is a steroid hormone that stimulates the development and maintenance of masculine characteristics, encouraged another group of experiments (1). If a male fetus is exposed to high levels of androgen, they will become masculine and be attracted to females; if they are exposed to low levels of this hormone, they will have an attraction towards other males. In earlier studies, it has also been scientifically proven that there are present genes that can lead to homosexuality (Being Homosexual 1). If an individual’s genetic code contains two different alleles of a particular gene then it is highly likely that the two different alleles are able to be exchanged to the next generation by mothers, this idea supports the connection to homosexuality by the X-chromosome (1). The reason scientists still continue to debate over this major controversy is blurred, with their proof evident in their research, yet the question of accuracy still remains. Further research has shown this is not the case when it comes to identical twins. Michael Bailey of Northwestern University collaborated with Richard Pillard of the Boston University School of Medicine in order to publish a study on homosexuality on the genetic makeup of twins (Cornuelle 1). The results of their study showed that sexual orientation is something that an individual is born with. To conduct their experiment, Pillard and Bailey surveyed homosexual men about their brothers and had received unexpected answers from their experiment (Fisher 1). The statistics concluded that of the homosexuals who had identical twin brothers, fifty-two percent of those twins were homosexual. Twenty-two percent of those who had fraternal twins expressed that their twin was homosexual, and only eleven percent of those who had adopted siblings proclaimed that their adopted brothers were also homosexual (Kenyon 1). The link supporting the genetic theory shows identical twins share many of the same genes, meaning they share most of the same traits (1). If one of the twin’s traits is homosexuality, the chances the other will have that same characteristic exceeds fifty percent. In response to the statistics, an argument proposed for researching twins and their genetics leaned more towards the environmental nature of sexuality instead of the basics of genetics states,

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