Flexibility trumps fitness in sexual reproduction, says new theory in evolutionary biology.

NewsRx Health | December 14, 2008 | Copyright

The utility of sex, according to an intriguing new theory of evolutionary biology, may be its ability to promote genes that play well with many other partners rather than those that shine with just one specific set of genes.

This idea of genetic mixability, described in the journal Proceedings of the National Academy of Sciences the week of Nov. 24, hits on the difficulty evolutionary biologists have had in understanding sex, specifically its role in population genetics and Darwin's survival-of-the-fittest mantra.

"It's the generalist winning over the ...

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