Question

Within the past 2 million years in Lake Malawi, over 400 species of fish have descended from a single common ancestral species. Some of these species may have developed when fluctuating water levels isolated small sub-populations of the original ancestral species and prevented interbreeding. This is an example of what type of speciation?

Answer 1

a
allopatric
b
sympatric
c
parapatric
d
polypatric