Final answer:
Allopatric finches have more different beak shapes compared to sympatric finches.
Step-by-step explanation:
Allopatric finches have more different beak shapes. Allopatric speciation occurs when finch populations are geographically separated, leading to evolutionary changes and the formation of different species. In contrast, sympatric finches live in the same space and may have distinct mating behaviors but do not have as many different beak shapes as allopatric finches.