Prezygotic Isolation

Definition

Prezygotic isolation is a mechanism that prevents different species from interbreeding and producing hybrid offspring. This occurs before the fertilization of eggs.

Related terms

Behavioral Isolation: A type of prezygotic barrier where two allopatric species do not mate because of differences in courtship behavior.

Temporal Isolation: A form of prezygotic barrier where two or more species reproduces at different times, thus preventing them from mating.

Mechanical Isolation: Another form of prezygotic barrier where mating is prevented due to physical incompatibility of reproductive parts.