Scientifically speaking, if you're "born" with brown hair and blue eyes, it's because your DNA contains the genetic codes for brown hair and blue eyes. So, it follows that if a person says they were "born" gay, then their DNA must contain a code for homosexuality, right? Even if this [i]were[/i] true, this would make homosexuality a disadvantageous mutation or [i]genetic defect[/i] at best. And this is IF it is truly genetic. Disadvantageous because: 1. All species must reproduce to survive. 2. Humans reproduce sexually. 3. Two homosexual humans cannot reproduce sexually. 4. If homosexual humans cannot reproduce sexually, then they cannot survive. 5. If Homosexual humans cannot survive, then they will go extinct, and the "gay gene" that caused them to be born gay would cease to exist. And that's basic Darwinism for you. Advantageous genes survive, and disadvantageous ones do not. Now, let's shift gears for a second. What if a heterosexual person mated with a homosexual person? What would the resulting offspring be? Well, this begs many questions. 1. If a gay person mates with a person of the opposite gender, wouldn't that make them bisexual and not truly homosexual? Would this mean that [i]bisexuality[/i] is also genetic? 2. What if a person was secretly gay, and kept this hidden from their heterosexual partner? (While this technically could happen, why would they do this?) The above examples are the only *consensual* ways I can think of for homosexuality to be passed on to children via sexual reproduction. (Not counting artificial insemination or sexual assaults.) The bottom line is, if someone is arguing that a gay gene has survived within the human race, they are making one or more of the following claims: 1. Gay people aren't really gay, but ALL humans are actually born bisexual and just happen to have a preference towards one *or more* gender(s). 2. Since the dawn of the human race, gay humans have been "tricking" heterosexual humans into mating with them to ensure the survival of the gay gene. (Highly unlikely.) 3. Some heterosexual people don't actually [i]know[/i] that they are carrying the (dormant) gay gene, and unknowingly pass it on via sexual reproduction. 4. The "gay gene" is a mutation that only VERY recently started to randomly generate within the human race for unknown reasons. 5. The gay gene has survived millions of years of natural selection, despite being disadvantageous to the survival of our species ([i]until the last 100 years with advancements in medical technology that make it irrelevant to our survival[/i]). Claim: A homosexual gene could not possibly have survived within the human race up until this point. If it does currently exist, then it is a mutation that has only recently started to appear, AND it can only survive under very specific circumstances. Discuss.