Which of the following scenarios best describes allopatric speciation?

Why do scientists consider the Abert’s and Kaibab squirrels to be examples of speciation?

Which term describes rapid speciation under conditions in which there is little competition?

Biogeographic isolation leads to which of the following processes, resulting in the formation of a new species?

Which term describes the formation of a new species from an existing species, typically occurring in two phases?

In order for speciation to occur, organisms can no longer interbreed. This is known as:

Under which of the following conditions can we conclude that speciation has occurred in *Uta stansburiana*?

When gene flow between two populations ceases, the potential for __________ exists.

Bird guides once listed the myrtle warbler and Audubon's warbler as distinct species that lived side by side in parts of their ranges. However, recent books show them as eastern and western forms of a single species, the yellow-rumped warbler. Apparently, the myrtle warbler and Audubon's warbler __________.