http://uk.news.yahoo.com/gay-gene-discovery-suggests-sexual-orientation-not-choice-085610185.html#6dq7lRA
In b4 Abortion for gays (will probably happen). If proven true i wonder how the church will take it ^^
Interesting, i once read that it would have to do with which hormons a baby mostly got into touch with, within certain stadiums of its development. Perhaps a little bit of both now? As i dont see yet the one theory excluding the other.
The conclusions taken out of this will be as different as there are stances of people who dont care, or take a stance against or for freedom of sexuality.
Worst case scenarios, genetic screening of embryo dna, or even before that genetic engeneered/modified(?) breeding. Now that in itself is not really supported by the church, but when the outcome would lead to no gay babies, a few sick fucks may reconsider. As many of the anti-gay stances see "gay" often even as sickness, there is nota big step to see ways to prevent it as cure.
One thing we all should not forget, it is biodiversity & varianz which makes the boat of species float. Take away diversity or varianz and you take away survivability. Often certain types of genes have not only one but several meanings within the DNA, influencing one influences others too, and while a marker which is found here in that study may suggest and point to an adjective like "being gay" it may but also stay dorment in other people or have other functionalities. There are but dudes who really know this stuff, i have only scratched some basic understanding and i am not sure that i even got that all correct what i mentioned above.