“The flawed thinking behind a genetic test for sexual orientation is clear from studies of twins, which show that the identical twin of a gay man, who carries an exact replica of his brother’s DNA, is more likely to be straight than gay,” The Guardian article continues. “That means even a perfect genetic test that picked up every gene linked to sexual orientation would still be less effective than flipping a coin.”
Which then leads directly to this sort of bullshit:
Bryan Fischer of the American Family Association says the scientific findings show that homosexual behavior is ultimately an individual choice.
“Without a genetic causation, sexual preference in behavior is clearly a choice, a choice which no one is compelled to make,” Fischer wrote in a column last week. “And that choice can be evaluated in any number of ways, including whether or not it is good for human health and whether or not same-sex households are sub-optimal nurturing environments for vulnerable young children.”
“If homosexual conduct is ultimately a matter of choice,” Fischer continued, “then the homosexual lobby has nothing, because homosexual conduct is clearly harmful to human beings in any number of ways, not the least of which is serving as the leading cause of HIV/AIDS, which can leave young men disease-ridden and destined for an early grave.”
As for this idiotic twin-study “proof”…..
A new study of twins provides the strongest evidence yet that homosexuality has a genetic basis, researchers say, though they say other factors like social conditioning may be important.
The study, published in the December issue of The Archives of General Psychiatry, adds to evidence that sexual orientation does not result from a maladjustment or moral defect, one author said.
“We found 52 percent of identical twin brothers of gay men also were gay, compared with 22 percent of fraternal twins, compared with 11 percent of genetically unrelated brothers,” said J. Michael Bailey, an assistant professor of psychology at Northwestern University in Evanston, “which is exactly the kind of pattern you would want to see if something genetic were going on.” By “unrelated,” Dr. Bailey was referring to brothers by adoption.