Question

Which among the following scenarios is an example of development of allopatric species?

• A. A river separates members of a squirrel population that used to occupy the same geographical area
• B. Houseflies from a certain region migrate and interbreed with a different housefly population in a neighbouring area
• C. A disease ravages a large fox population, killing all members that did not have a genetic resistance to the disease
• D. Certain members of a human population have more offspring than others

Answer 1

The correct option is A A river separates members of a squirrel population that used to occupy the same geographical area

Allopatric speciation occurs when members of species in a population are separated by a geographical barrier such as a waterbody or landmass. It prevents individuals from interbreeding. Both groups would be exposed to different environmental conditions. This separation eventually results in two distinct species.

A river separating members of a squirrel population that used to occupy the same geographical area. The two populations now become allopatric species. Other options do not confine to the requirements of being allopatric species