Sexual selection

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  • The living rainbow: A fatal flaw in a classic study of sexual selection. A key component of classical sexual selection theory is the idea that males maximize their evolutionary fitness—the number of children they ultimately have—by mating with lots of females, while females maximize their fitness by selecting only one or a few high-quality partners. It's pretty clear that this model works well for some species (like ducks), but also that there are many it doesn't fit so well. Now it looks like one of the "classic" experimental examples of sexual selection may actually fall into the latter category. 27 June 2012