As a biologist, the following from the original op-ed piece kinda irks me:
The “propagate the species” thing is faulty. It is not as bad a misunderstanding of evolution as “if we came from monkies, why are there still monkies?”, but it still shows a lack of how humans evolved.
Why this is so faulty has been called “the uncle effect”, but I think a better illustration would be why women live beyond menopause. Post-menopausal women obviously can’t breed, yet they consume the same amount of resources as a fertile woman. If humans were a solitary species, they’d be useless.
However, humans are not a solitary species, but a social one. It took a bunch of cavemen to bring down a mammoth. We are pack animals. We function, and evolve, as a group. A tribe with some old women who have ammassed a lifetime of experience will outcompete a tribe that kills off it’s elderly, even though those old women don’t breed. They serve a different function. Survival of the fittest is not solely DNA; it is also behavior.
The “uncle effect” is a similar principle. The energies of a homosexual individual are not directed solely to it’s offspring (which is obvious, because it has none), but to the family group as a whole. Some have theorized that this is why homosexuality is so prevalent in mammals as opposed to say, reptiles or amphibians. A homosexual brother will aid his heterosexual brother in food gathering and survival, which in turns helps the heterosexual brother produce more healthy offspring, which then in turn helps the homosexual brother pass on some of his genes as he shares some genes with his brother. Hence “the uncle effect”. Children with a gay uncle have the luxury of two males hunting for them
In short, it can be argued that a species with a minority of homosexuals will out-compete a species in which all individuals breed. It sounds counter-intuitive at first, but if you think of the most social of species it pans out. Insects out-compete everything on the planet. Most ants and bees don’t breed, but rather toil solely for the group.
On a side note, I’m Christian, so let’s not go bashing religion as inherently anti-gay. (not that I’m saying anybody was, just that I’ve seen these discussions devolve into that)
did I just say “devolve”? I hate that word - it’s scientifically meaningless