ALLOPATRIC SPECIATION The physical isolation of the biology population due to the
extrinsic barrier is called allopatric speciation.
Allopatric speciation occurs when a population of organisms becomes
separated or isolated from their main group due to geographical barriers.
Over time, the new groups consisting of homogenous individuals become subjective to changes via natural selection due to pressure from differences in
predators, climate, competitors and resources. Populations can become isolated for a variety of reasons.
