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 ...

In order to investigate the hypothesis that disruptive selection is acting on Poa annua L. populations within a mosaic environment of bowling greens and flower beds, two experimental approaches were ...

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 ...