Nsikan Akpan Nsikan Akpan. In its stead, the report finds that human DNA cannot predict who is gay or heterosexual. Sexuality cannot be pinned down by biology, psychology or life experiences, this study and others show, because human sexual attraction is decided by all these factors. The study shows that genes play a small and limited role in determining sexuality. Moreover, the researchers found that sexuality is polygenic — meaning hundreds or even thousands of genes make tiny contributions to the trait.
Biology and sexual orientation
Is being Gay a choice or is it genetic? ? | Yahoo Answers
The relationship between biology and sexual orientation is a subject of research. While scientists do not know the exact cause of sexual orientation , they theorize that it is caused by a complex interplay of genetic , hormonal , and environmental influences. Biological theories for explaining the causes of sexual orientation are favored by scientists. The influence of hormones on the developing foetus has been the most influential causal hypothesis of the development of sexual orientation. The presence of the Y-chromosome in males prompts the development of testes, which release testosterone, the primary androgen receptor-activating hormone, to masculinize the fetus and fetal brain. This masculinising effect pushes males towards male typical brain structures, and most of the time, attraction to females.
Cross-Cultural Evidence for the Genetics of Homosexuality
That is the very best and most charitable explanation for comments by Dr. His evidence? Prison, of course, is the worst of all possible examples Carson could have chosen—conflating sexuality with circumstance. Men confined together for years without women remain sexual beings and may take whatever outlet is available to them. Something similar was true in a less enlightened era of gay men and women who were forced to marry people of the opposite sex, and who dutifully produced children and tried to satisfy their partners despite the fact that they were getting little satisfaction themselves.
Ben Carson, a retired neurosurgeon and presidential hopeful, recently apologized for a statement in which he said being gay is "absolutely" a choice. In an interview on CNN, the potential Republican presidential candidate commented that "a lot of people who go into prison, go into prison straight, and when they come out they're gay, so did something happen while they were in there? Ask yourself that question.