Answer the following question given this paragraph: 

New species arise in the process of speciation. Allopatric speciation occurs when some members of a species become geographically separated. They then evolve genetic differences. If the differences prevent them from interbreeding with the original species, a new species has evolved. Sympatric speciation occurs without geographic separation.


Q: What occurs when some members of a species become geographically separated?


A:
allopatric speciation