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 a combination of genetic, hormonal, and social factors determines it. Biological theories for explaining the causes of sexual orientation are favored by scientists  and involve a complex interplay of genetic factors, the early uterine environment and brain structure. A number of twin studies have attempted to compare the relative importance of genetics and environment in the determination of sexual orientation. Self reported zygosity , sexual attraction, fantasy and behaviours were assessed by questionnaire and zygosity was serologically checked when in doubt.
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Have Scientists Found The Gay Gene?
Gay Scientists Discover the Christian Gene - Politics and World Issues - Forums - T Nation
Is there are gay gene? Homosexuals claim that sexual orientation is genetic, and as such they cannot choose the gender to which they are attracted — they were born that way. They also claim that there are many instances of homosexual behavior in nature — that homosexual behavior has been observed in over species of animals. And to their credit, they think they have much science to back them up. They can quote a wide range of scientific studies and theories that support their claims.
Gay Scientists Have Isolated the Christian Gene! See it here now!?
Nature News were among the first to break the story based on a conference abstract. Others quickly followed suit , many using a press release issued by the conference organizers. Meanwhile, the mood at the conference has been decidedly less complimentary , with several geneticists criticizing the methods presented in the talk, the validity of the results, and the coverage in the press. He analyzed , regions in the genomes of the twins and looked for methylation marks—chemical Post-It notes that dictate when and where genes are activated. He whittled these down to around 6, regions of interest, and then built a computer model that would use data from these regions to classify people based on their sexual orientation.
Battling the 'homosexual agenda,' the hard-line religious right has made a series of incendiary claims. But they're just not true. Ever since born-again singer and orange juice pitchwoman Anita Bryant helped kick off the contemporary anti-gay movement some 40 years ago, hard-line elements of the religious right have been searching for ways to demonize gay people — or, at a minimum, to find arguments that will prevent their normalization in society. For the former Florida beauty queen and her Save Our Children group, it was the alleged plans of gay men and lesbians to "recruit" in schools that provided the fodder for their crusade.