Biological gay

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 populations. In , researchers discovered a biological mechanism of gay people who tend to have older brothers. They believed the Neuroligin 4 Y-linked protein was responsible for a later son being gay.

No matter why those genes are still around, we do know that being gay is partly genetic and partly determined before a baby is even born. This tells us that sexual orientation isn’t a learned behavior or a choice. New research confirms that a mix of prenatal factors and genetic differences could explain human sexual orientation.

Homosexuality has been a constant throughout human evolution and civilization, and yet, science has been slow to look at the causes of sexual preferences. Scientists have found links between a man's sexual orientation and different biological mechanisms. Past studies have suggested signs of how a man's immune system works, as well as his hormones. Because there is overwhelming evidence that points the other way too. Things-to-do Want to Beat the Summer Heat?

The Brink. Especially the part about the comparison with bestiality and pedophilia; it logically makes sense. Michael Bailey, a professor of psychology at Northwestern University, conducted in the early s that found that homosexuality is largely biologically determined, not environmentally influenced. An hypothetical instance of this inheritance pattern would be a gay man who has a sister has a gay nephew through her, and then this gay nephew would in turn have another gay nephew through his sister, and so on down through the family tree.

Do you think that because attitudes are changing and acceptance of the LGBT community is becoming more prevalent, people are more willing to accept the possibility that sexual orientation is determined biologically? Schwartz, and V. Pillard and J. They no longer expressed a female typical behavior found in rodents. Is the research currently being done heterosexist? We are discussing attraction to men or woman here.

Hypothetically, because no such gene has been identified, a gene that promotes testosterone production could be at a selective advantage in males if it promoted traits such as muscle development, risk taking, opposite-sex sexual attraction and increased sexual attractiveness to females. Yet, there are critics saying that sexuality in lower mammals shouldn't be placed on the same pedestal as human sexual orientation.

Has the question of "Whom is a person sexually attracted to? I was speechless. Gorski,"Sexual orientation and the size of the anterior commissure in the human brain," Proceedings of the National Academy of the U. If my sexuality is genetic, then there also has to be a gene that explains the behavior of those involved in beastiality and sex with children even infants. Christian or not — sin or not — legal or not — people will act out their desires.

Bagemihl, Bruce. Significant studies relating heredity to homosexuality began with Richard Pillard and James Weinrich in the 's. BU Today.

Where does gayness come from

He was right. For example, when one's external genitalia is significantly different than one's peers, notions of gender and sexuality are often questioned. Nature vs. With results stating that this region of the brain is different in homosexual and heterosexual men, and the knowledge that the size of this same region in rats is determined in utero and directly following birth, the evidence seems to support the theory that homosexuals are "born that way.

The Biological Roots That Can Influence Homosexuality

If testosterone is given to a female rat just prior to and following birth, the size of the medial preoptic area of her hypothalamus will fall within the range of that found in non-treated male rats. Biological factors shape sexual preference. This enzyme converts testosterone to a more potent male-determining hormone. This factor led to their defeminization. What made you decide on this research?