[scripter]

With todays biological tools and research methods, I think it quite likely that the cause and necessary preventives could be developed.

Yes and no - much more likely no. Homosexuality is not caused by genetics or biological criteria:

Category	Year	Title	Posted On FR
Genetics
	2004	Homosexuality is not biologically determined - latest research	Yes
		The Animal Homosexuality Myth
		Fencing with the NY Times Over Gay Marriage
		Expert Gives Powerful Testimony in Defense of the Family	Yes
		Born or Bred? Science Does Not Support the Claim That Homosexuality is Genetic
		Gays in Society: The Growing Clash	N/A
	2003	Homosexuality: Innate and Immutable?
		Ad campaigns duel over 'ex-gays'
		'Cure' for homosexuality?
		Study Trumpeted by Health Writer as Evidence that Some Are "Born Gay"	Yes
		Of mice and gay men	Yes
		Newswriters Represent New Study As Proof Of Biological Basis Of Homosexuality	Yes
		Homosexuality and Genes: Déjà vu All Over Again?	Yes
		Can Homosexuals Change?
	2002	The Importance of Twin Studies	Yes

Click here for more.

For great summary on the issues: How Might Homosexuality Develop? Putting the Pieces Together

[Wonder Warthog]

"Homosexuality is not caused by genetics or biological criteria.."

Sorry, can't buy that. It may not be GENETIC, but it almost certainly has some physiological root(s). My own personal suspicion is that it is a "birth defect" caused by some chemical or hormonal imbalance to which the developing fetus is exposed to while in gestation.

Sure, "some" homosexual behavior is simply due to brainwashing of sexually immature individuals by "chicken hawks"---but not all of it.

I vaguely recall reading about some German research in which homosexual tendencies were reversed by simple hormonal adjustment.