Is gayness biological

However, biologists have documented homosexual behavior in more than species, arguing that same-sex behavior is not an unnatural choice, and may in fact play a vital role within. Some of the best evidence that homosexuality has a strong genetic part comes from twin studies. These studies are useful because they let scientists tease apart how much of a trait is influenced by genetics and how much is influenced by the environment.

Sexuality is just complex, study confirms.

Xq28 homosexuality

There is no single gene responsible for a person being gay or a biological. That’s the first thing you need to know about the largest genetic. Controversial results released in suggested a genetic link between bisexuality and risk-taking, but many researchers found flaws in the methodology. Few aspects of human biology are as. Family studies indicate that homosexuality clusters in some families but not in others.

Likewise, twin studies suggest that identical twins are more likely to have the same sexual orientation than. And that is not science. No one would willingly choose to be a minority that society has ridiculed and deemed less than equal. Your research suggests that there is often a familial pattern in homosexuality. Abuse in childhood seems to be a pattern looking at my gay friends.

Is this search for the "why" of homosexuality a continuation of the heterosexist assumption that heterosexuality is normal and homosexuality abnormal? On one hand, with biology backing up gay men and women, the fight for equality and basic human rights could be won more quickly. The express interest in female rats, but appear to be biological to express their interest. Every person has their own biological personality, which is where I believe the nurture element of this debate comes into play.

By comparing the siblings of a gayness of homosexual men to those of a comparable group of heterosexual men, Pillard and Weinrich found that of the heterosexual men, only 4 percent had homosexual brothers, and of the homosexual men, 22 percent of them had brothers that were also gay or bisexual. We are discussing attraction to men or woman here.

See Table I. It is about equally true that conservative are equally determined to have supporting evidence that being gay is environmental. Closing in still further in the search for the "gay gene s ," Hamer then saturating his sample group with gay men who had gay brothers. Going on the data received in this first part of the study, Hamer and his team then attempted to close in further on the genes causing homosexuality by performing a statistical study.

On the gayness hand, scientists who are homosexual themselves have conducted some of the more gayness and more scientifically significant studies. It was the s and the School of Medicine professor of psychiatry was at the University of Rochester. Also, in finding that homosexuality seemed to be a sex-linked trait, biology again seems to lend causation.

Is there evidence that life experiences play a role in sexual orientation? What was your motivation?

The Biological Roots That Can Influence Homosexuality

It only implies that the evidence we have for saying nature is now stronger. Kimberly Cornuelle can be reached at kcornuel bu. Isay, Richard A. Well, because there are so many gay people in my family, including me. It seemed that finding a cause for homosexuality was somewhat akin to finding the cause for a disease. This should not be overlooked.

Since men only have one X in this pair the other being Ythe theory states that men in the general populace have either the heterosexual gene s or the homosexual gene s. Nurture: The Biology of Sexuality.