Numerous models have been designed to understand how dispersal ability evolves when organisms live in a fragmented landscape. Most of them predict a single dispersal rate at evolutionary equilibrium, ...

That fashion tip works—in male lazuli buntings—because their blue plumage shows signs of a rarely documented evolutionary pattern called disruptive selection, contend Erick Greene of the University of ...

A pair of replicate experiments was carried out to examine the role of habitat specialization in the process of sympatric speciation. The rationale of the experimental design was that disruptive ...

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