Question

allopatric and sympatric difference​

Answer 1

Allopatric speciation and sympatric speciation are the two major mechanisms involved in the formation of new species from a pre-existing species. The process of forming new species from a pre-existing species is called anagenesis. Anagenesis occurs through reproductive isolation of individuals in a population. The main difference between allopatric speciation and sympatric speciation is that allopatric speciation occurs when a biological population is isolated by an extrinsic barrier causing a genetic reproductive isolation of individuals whereas sympatric speciation occurs when new, distinct species are evolved due to polyploidy.