Random processes/drift. Some models of speciation do not include a role for selection of any sort, but rather invoke a key role for chance events. Such models include speciation by ...

In Box 4 of their Review 1, Noor and Feder listed ten examples of genes involved in forming a reproductive barrier that could lead to speciation events. The authors wrote: “...we could be ...

Often this type of speciation occurs in three steps ... Research Institute in Panama has been studying this geological event and its effects on populations of snapping shrimp.

The more we discover about our species' family tree, the harder it becomes to pinpoint when exactly Homo sapiens emerged, ...