Do gay people have the urge to reproduze

In case the correspondence was leaked or intercepted, he took the further precaution of writing key sections in ancient Greek: these were not letters to be read by the lower orders. While we may have accepted that same sex attraction is natural, though, there is a far harder question: why is it natural?

Male homosexuality, a trait that, at least among exclusive homosexuals, means people have no interest at all in the act of reproduction, should never have existed in the first place. Imagine you had never heard of evolutionand someone described it to you.

Humans, alas, can’t. This is a problem, particularly so with men — who for obvious reasons find it harder to fake an interest in sex. He believes there is a simple explanation for this. It is not the only option, though. Gay men and lesbians can still physically reproduce--being gay does not remove one's biological ability to reproduce, especially given the rise of reproductive medical technologies over the last few decades.

And if penguins can be homosexual, what was to say that that behaviour, far from being the perversion society presumed it was, was natural in humans too? Being gay no longer holds the stigma it once did, but in evolution, why does a non-reproductive trait persist?

Stick insects can do this. One of the most basic predictions you would surely make is that a trait that made people less likely to reproduce should die out. There are the Hijras of Pakistan. So it is passed on by evolution. There are the Khatoey ladyboys of Thailand.

We know that homosexuality is, at least in part, genetic. That its prevalence remains largely the same also shows the limits of such socialisation — that there is something else going on. The best way to reproduce, in terms of percentage of genes passed on, is to clone yourself through asexual reproduction.

That it can take such widely different forms, shows the impact society can have on sexuality. In George Levick, an explorer, travelled to Antarctica. This is not the only place with third genders. These days homosexuals, avian or otherwise, generally have an easier time of it.

Gay sex and attraction may have evolved because individuals with a degree of same-sex attraction benefited from greater social mobility, integration and stronger same-sex social bonds. I do believe in a biological substrate of sexual orientation since our human existence rooted in our biology but I have no clue what lies at the basis of homosexuality and by the same token heterosexuality.

The most efficient method we have to perpetuate our genes is sexual reproduction – passing on half our DNA each time. A hormonal basis for homosexuality?. These observations raise the question: why have genes associated with same-sex sexual behavior been maintained over evolutionary time?

Gay men as individuals

To answer that question, researchers have gone to a place where homosexuality itself does not exist, at least in the form we know it: Samoa. Studies show, for instance, that identical twins are more likely to be both homosexual than non-identical twins.

If you take that potential, put it in Canada, feminine boys learn pretty quickly they had better masculinise to survive. There, he found something so terrible that he requested his findings not be published. And yet it does. Given that evolution depends on genes being passed down through the generations via reproduction, how and why were these genes passed down too?.

Both exhibit elevated childhood gender atypical behaviour, both exhibit elevated childhood cross sex wishes, both exhibit elevated childhood separation anxiety, both prefer female-typical occupations in adulthood.

Levick had been studying penguins: birds whose monogamous lifestyle had so impressed the Victorians that they had been held up as models of probity and integrity. But he had seen something on his trip to the bottom of the world that had caused him to question that assessment.