What is the main difference between sympatric and allopatric species?

The distinction between sympatric and allopatric species primarily lies in their geographic distribution. Sympatric species occur in the same geographic area but have developed reproductive barriers that prevent them from interbreeding, leading to the formation of new species within the same location. This could be due to factors such as behavioral differences, temporal differences in breeding seasons, or other ecological factors that allow coexistence without genetic mixing.

In contrast, allopatric species are separated by a geographic barrier that prevents them from coming into contact with one another. This physical separation often leads to divergent evolution as each group adapts to its own environment over time.

The correct response emphasizes that sympatric species share the same geographic area, which is crucial for understanding how speciation can occur without physical barriers.