For each of the following conditions that would lead to speciation, note if
the mechanism is allopatric or sympatric, prezygotic or postzygotic, and the
specific type of pre or post-zygotic isolation:
a. Two populations of stickleback fish evolve different courtship behaviors though they live in the same lake
b. Two populations of beetles are separated by a large body of water and gene flow is not observed between these population in the wild. Mating can occur between these two populations as observed in the laboratory,
but the offspring do not develop or die shortly after hatching.
A: Prezygotic barrier- behavioral isolation
B:Post zygotic barrier: reduced hybrid viability