Skip to comments.Q & A Concerning the March 2005 Human Genetics study concerning sexual orientation in men.
Posted on 02/24/2005 8:28:08 AM PST by dcnd9
Warren Throckmorton, PhD (Reviewed by Durwood Ray, PhD, Professor of Biology, Grove City College)
Information about the article, "A genomewide scan of male sexual orientation" by B. Mustanski, et al, published in the March 2005, issue of Human Genetics.
"It is important to note what the study did and did not do:
From our reading of the published report, here is what we believe the study did:
The researchers found 3 locations in the genome where self-identified gay and bisexual brothers share DNA sequences between 8-12.5% greater than expected by chance. In one location, 7q36, the gene sharing was great enough to be considered suggestive that the DNA sequence might be close to a gene that controls or influences sexual orientation. The other two regions where sharing was greater than chance did not reach a level of sharing that would permit the researchers to say the location may be linked to a potential gene influencing sexual orientation. However, the researchers reported these regions because they cannot absolutely rule out that a gene influencing sexual orientation might be involved or close by. In examining region Xq28, the study did not find linkage in the full sample. However, the reanalysis of the prior work of Hamer (1993) found a highly suggestive linkage in that sample of subjects. The authors speculate that perhaps Xq28 could implicated in the development of sexual orientation for some people and not for others.
Here is what we believe the study did not do:
The study did not find genes that directly organize the brain to respond sexually to those of the same sex. It did not specify what genes may actually be involved in sexual orientation. It did not provide any specificity in how the DNA locations identified could impact people to develop sexual attractions of any kind."
Complete article at link noted.
Warren Throckmorton, PhD
Did the researchers found any locations in the genome where self-identified bicycle seat sniffing brothers share DNA sequences at any percentage greater than expected by chance?
Dr. Throckmorton does not believe SSA is genetic.
His point is you can overcome those abnormal unwanted SSA's. Opposite of what society has been telling these folks the past 30+ yrs.
Interesting. I think it has been speculated by both sides that certain personality traits leave a person more prone to participate in activities that others would never do. Addiction is one such thing. Risk taking. Aggression.
"The researchers found 3 locations in the genome where self-identified gay and bisexual brothers share DNA sequences..."
How do we know these shared DNA sequences have anything whatever to do with sexual orientation?
Religion aside, evolution wouldn't permit such a gene--there would be no way to pass it on. If it were genetic, affected species wouldn't be encumbered by "social norms" and thus mate with the opposite sex to propagate the species (requires reason, among other things); the "gene" would make the subject mate only with its own sex, and thus, be incapable of passing on the gene, effectively eliminating the chances of it occuring further down the evolutionary chain. It would have to evolve out of the gene in order to continue the existence of its species, the goal at which evolution is aimed.
These same studies would have to be performed in utero to provide any proof.
So motive outweighs facts?