Alright, let’s put some arguments/evidence on the table.
“It is known that during early pregnancy, certain hormones must be released at certain times by the mother for the fetus to develop properly. Some studies have suggested that certain hormones, either released in excess or in quantities too small by the mother will affect the forming brain in the fetus. These developing brain structures may very well influence the fetus' sexual development” -
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Once again, a statement full of hearsay and conjecture. Although logical, there is no conclusive evidence contained in it.
“One of the more interesting recent studies of homosexuality and biology has been in the area of twin studies. It seems that in the case of identical twins, if one is homosexual, then the other has a more than 50-percent probability of being homosexual.” -
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“For example, recent studies done with identical twins have been offered by some as evidence that the origins of homosexuality might be in the genes. In one study, Dr. Michael Bailey of Northwestern University examined 110 pairs of identical twins who had been separated at birth and raised in different environments. He found that if one was gay there was a 52% chance the other was also. But among fraternal twins, the chance fell to 22%. Because the ratio was higher among twins who are genetically identical, this study has been referred to by many as evidence that homosexuality is genetic in origin. I even heard Dr. Dean Edell (a famous radio call-in doctor) appeal to this study in defense of homosexuality.” -
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I agree with the author of the second paragraph here, who stated: “This study would rather confirm that though there may be genetic factors that increase the likelihood of one becoming a homosexual, these genetic factors alone do not produce homosexuality (as in the case of 48% of those heterosexuals whose identical twin was homosexual). There must also be environmental factors for homosexuality to develop.”
“Recent research has demonstrated that the brains of men and women are different in some surprising ways. It has been suggested that women have greater connectivity between the two halves of their brain, as a result of a thicker corpus callosum -- the brain tissue that links the two halves together. It is this greater connectivity that has been suggested as the cause of greater intuitiveness and creativity in women. This same thickening has been demonstrated to exist in the brains of gay men, suggesting that the brains of men like myself are probably more like women's brains in function than men's. Another brain difference has been found in the hypothalamus -- a part of the brain that influences sexual behavior and sexual aggression. Males tend to have much larger cell structures in certain parts of the hypothalamus, while females tend to have smaller cell structures. And again, studies of the hypothalami in homosexual men have found that the smaller, female-like cell structures are present.” -
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The author wisely counters his own argument by saying: “Of course, this research is by no means conclusive. Questions of causality are not answered -- are brain differences between males and females inborn, or are they socially constructed? Is it possible that homosexual behavior or upbringing causes these brain differences to develop? And do brain differences exist in the case of lesbians, as opposed to heterosexual women?”
“This study confirms my understanding that the cause of homosexuality is a highly complex combination of various factors, some genetic and some environmental, that make it much easier for some people to become entrapped in this particualar sin. In this regard, it is not much different than alcoholism, where similar studies involving identical twins have shown similar results. All it confirms is that there may be some people with a genetic likelihood of developing a "predisposition" toward such things as homosexuality and alcoholism, but it requires the addition of environmental factors to produce the actual homosexual or alcoholic.” -
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Personally, I think I’m going to have to revise my stance on this debate. I almost completely agree with the above paragraph. It seems to be a good compromise between the opposing arguments.