AP BIOLOGY

Detailed explanation-1: -Geographical isolation means the separation of species by physical barriers like water forms, oceans, mountains, etc. The organisms are ultimately separated from exchanging genetic material with other organisms of the same species.

Detailed explanation-2: -Geographic isolation occurs when two populations are separated by geographic barriers such as rivers, mountains, or bodies of water. For example, the Kaibab squirrel is a subspecies of the Abert’s squirrel that formed when a small population became isolated on the north rim of the Grand Canyon.

Detailed explanation-3: -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-4: -The physical separation of members of a population. populations may be physically separated when their original habitat becomes divided. Example: when new land or water barriers form. See also allopatric speciation.

Detailed explanation-5: -Allopatric speciation refers to the process by which a physical barrier separates a single population, causing two (or more) populations to arise and evolve due to environmental differences to become different species.