The debate will probably continue to go on and on as to whether or not someone is born gay, or born with same sex attraction. Even though the latest sciences have not been able to give a solid biological defense, I suppose people will still assume individuals will argue towards something that is outside of their own control as a method of separating themselves and demanding more from society.
I do believe that individuals are given different challenges in life including same sex attraction. But I do believe that it is something that people can chose to overcome... should they chose to. General Authorities have spoken to this issue stating that homosexuality is something exclusive to this life. It did not exist in the pre-mortal life and it won't in the life to come. In other words, homosexuality is not something that is part of your spiritual DNA regardless of how this challenge manifests itself physically here in mortality.
The gay community is somewhat divided over doing "gay science." Some seek for a biological defense to show that they are born this way and therefore should not be discriminated against for their preference. On the other side, some in the gay community look at the genetic science behind homosexuality and are afraid that if a genetic cause for homosexuality is found, that scientists will then provide a "cure" for this genetic discovery (should there ever be one). I say, (attn: gay community) if there is truly nothing wrong with being gay, as is so often interjected in conversation and argument, then there is also nothing wrong with being straight - right? And if there is nothing wrong with being straight, then why fight a "cure?" While one may not have a choice as to their sexuality from birth (using their argument, not mine), why not give someone the choice to be straight if that is biologically manipulatable?
Following the same idea that gays often use, that being gay is not a choice but how you are born, how then do gays explain bi-sexuality? I mean this seriously. I have not heard an excuse, explanation, anything from the gay community to explain how someone is bi-sexual, or in other words, how someone can have a choice of who they like; man or woman? Are people born bi-sexual according to the gay community?