Sex Is Shifting from Evolutionary to Socially Driven

Sex may be enjoyable, but in evolutionary terms, it's a very difficult way to reproduce.

Sex may be enjoyable, but in evolutionary terms, it's a very difficult way to reproduce. Compared to asexual reproduction, sex requires two organisms instead of one, and the exchange of genetic material resulting from sex is a slow process, leaving it vulnerable to prey until it can mature. 


So why has sex evolved as the dominant method of reproduction, at least among advanced species? The reason, says popular scientist and climate crusader Bill Nye, is that by creating a new mixture of genetic material, sex makes us less vulnerable to microscopic diseases like harmful bacteria and viruses.

Nye explains in his Big Think interview:

"Your biggest enemy is not lions and tigers and bears, which, of course, can be trouble — don’t get me wrong. Your biggest enemy is germs and parasites. So apparently by having sex, organisms are able to come up with a new mixture of genes, a new combination of genes, a new strand of DNA that the germs and parasites are not able to disable as readily, are not able to hijack as easily."

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