What is speciation in general? briefly describe the difference between allopatric speciation and sympatric speciation. be sure to include under what sort of conditions each type might occur?

When new species are formed from the preexisting species, it results in speciation. When a population is segmented due to a physical and geographic barrier, such as a mountain or barrier, and the species diverges into two species due to restricted gene flow, the formation of a subspecies or new species is as a result of allopatric speciation. However, sympatric speciation occurs within the same population without the physical barrier. It could result from differences in mating tendencies or due to post0xygotic and pre-zygotic hindrances.