Question

Explain the difference between "allopatric speciation" and "sympatric speciation". Provide an example.

Answer 1

Answer:

Allopatric speciation occurs when two species are living in separate environments and therefore there is no gene flow between the populations. for example, by an isthmus splitting an ocean or fruit flies being separated in the lab. Then the populations on both sides of the barrier cannot mate with each other, and each population evolves separately. Sympatric speciation occurs when two species are living in the same environment. The hawthorn fly is an example of sympatric speciation based on a preference of egg-laying location.