III. Islands as "natural laboratories" for exploring speciation We all know how much of an influence the juxtaposition of variation and similarity among islands in the Galapagos archipelago played in ...

Often this type of speciation occurs in three steps ... so that even if some variation occurs, it is limited by this "gene flow." But gene flow is interrupted if the population becomes divided ...

The role of sexual selection in speciation. A view that is becoming increasingly popular is that sexual selection, or selection related to variation in reproductive success, plays a role in ...

Habitat variation may also contribute to local adaptation ... which is a necessary precursor to speciation. Future studies that incorporate ecological, behavioral, and genetic data hold great ...