LIFE SCIENCE

Detailed explanation-1: -Speciation can show us that new biological species can come from divergence (separating) due to reproductive barriers. Speciation can show us that environmental changes & genetic variation play a role in the process of a new species diverging from an original species due to reproductive barriers.

Detailed explanation-2: -True speciation only occurs when reproductive barriers prevent productive interbreeding. Two major types of reproductive barriers prevent a species from interbreeding even if they are in the same geographic area: prezygotic and postzygotic reproductive isolation.

Detailed explanation-3: -Reproductive isolation, in turn, occurs when two groups of a species become separated and therefore cannot reproduce. The gene pool of these groups differs over time. If these two groups can once again meet up and reproduce, their genetic differences can be merged within the single group and increase genetic diversity.

Detailed explanation-4: -If two populations become isolated from one another and there is no gene flow between the two populations, they may develop into two distinct species. This process is known as “speciation".