If female butterflies are programmed to identify males of their species by the patterns of spots on their wings, how can new wing patterns evolve in males? The answer is that while females are predisposed to prefer a specific pattern, they learn to like flashier ones more, according to a new Yale University study. The study published online the week of June 11 in the Proceedings of the National Academy of Sciences gives a partial explanation of an evolutionary mystery.

http://tinyurl.com/c3xr7fe

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