In this article, Dr. William Byne, a psychiatrist with a doctorate in biology, and Mr. Dave Parsons carefully analyzed all the major biological studies of homosexuality.
They found none that definitively supported a biological theory of causation.
Author and sociologist Steven Goldberg, Ph.D., wrote,
"Virtually all of the evidence argues against there being a determinative physiological causal factor and I know of no researcher who believes that such a determinative factor exists.
Such factors play a predisposing, not a determinative role. I know of no one in the field who argues that homosexuality can be explained without reference to environmental factors."
Goldberg continued,
Gay criticism has not addressed the classic family configuration;
it has merely asserted away the considerable evidence for the existence of family factors. Studies which attempt to disprove the existence of the classic family pattern in homosexuality are convincing only to those with a need to believe.
In the Journal of Human Sexuality (1996), J. Satinover, M.D., wrote,
There is no evidence that shows that homosexuality is genetic and none of the research itself claims there is. Only the press and certain researchers do, when speaking in soundbites to the public.
The following quote is from Dr. Joel Gelemter of Yale University concerning the various studies attempting to link genes with complex human behavior.
He said,
All were announced with great fanfare; all were greeted unskeptically in the popular press; all are now in disrepute.
One of the studies in disrepute was conducted by Salk Institute researcher Simon LeVay.
He studied the brains of 35 male cadavers and reported that the cluster of neurons called INAH3 in the hypothalamus was generally smaller in 19 of the 35 cadavers. Those 19 were known to be homosexuals.
The remaining 16 cadavers, who were reported to be heterosexual, displayed a larger neuron cluster.
Mainstream media touted this research as a genetic link to homosexuality. Upon closer scrutiny, Mr. LeVay's research had at least three major flaws.
First, the sample was too small.
Second, the sexual orientation of the 16 classified as heterosexual was highly suspect. Six of them died of AIDS. And third, it has never been proven that the hypothalamus has anything to do with sexual orientation.
In 1993, another study was conducted by Dean Hamer of the National Cancer Institute. He studied 40 pairs of homosexual brothers.
He discovered that 33 pairs had DNA markers in the same chromosome region known as Xq28. This study was heralded by a liberal media eager for this kind of scientific support that homosexuals are born that way, therefore legitimizing the lifestyle.
The Hamer study has since been discredited. (Do you know the value negative evidence has in the scientific community? I'll give you a hint... not much)
Besides the sample size being too small there was no heterosexual control group where markers may or may not have been found.
A similar study was conducted later by George Ebers of the University of Western Ontario. His study had a much larger sample and it contradicted Hamer's conclusions.
Eber reported his results and said they do not support an X-linked gene underlying male homosexuality.