EVERYDAY SCIENCE

Detailed explanation-1: -Allopatric speciation (1) occurs when a species separates into two separate groups which are isolated from one another. A physical barrier, such as a mountain range or a waterway, makes it impossible for them to breed with one another.

Detailed explanation-2: -Isolated populations have been shown to suffer from increased rates of inbreeding depression, genetic drift, and reduced genetic diversity.

Detailed explanation-3: -Allopatric speciation, also known as geographic speciation, is speciation that occurs when biological populations of the same species become isolated due to geographical changes such as mountain building or social changes such as emigration.

Detailed explanation-4: -The correct answer is sympatric speciation. Although rare, sympatric speciation occurs in populations that occupy the same geography, but still develop reproductive isolation. This isolation is generally driven by behavioral differences.

Detailed explanation-5: -Allopatric speciation. Peripatric speciation. Parapatric speciation. Sympatric speciation.