AP BIOLOGY

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: -Geographic isolation occurs when two populations are separated by geographic barriers such as rivers, mountains, or bodies of water.

Detailed explanation-3: -Behavioral isolation occurs when the presence or absence of a specific behavior prevents reproduction from taking place. For example, male fireflies use specific light patterns to attract females.

Detailed explanation-4: -Differences in Mating Behaviors Behavioral isolation leads to speciation. This is defined as the divergence of one species into multiple distinct species over time. For this reason, it is sometimes referred to as a “mechanism” of speciation.

Detailed explanation-5: -Behavioral isolation occurs when mismatches in mating traits (signals and/or preferences) prevent mating between two species/populations.