Together, these results indicate that the single genetic swap probably set speciation in motion, Uy said. "I think we do have a speciation gene because this substitution creates a different physical ...

Because iguanas are large and easily observed, they are one of the more conspicuous examples of speciation on oceanic islands. To see a larger image, click here. Photo by Jeff Mitton. A ...

In a matter of months, butterflies sporting the yellow and red wing color pattern of a wild species were created through simple laboratory crosses of two other wild species, researchers report in the ...