Biology 11th Edition by Gerald Audesirk,Teresa Audesirk,Bruce Byers

Exercise 14

Fill in the following with the appropriate isolating mechanism: Occurs when members of two populations have different courtship behaviors: ______________; occurs when hybrid offspring fail to survive to reproduce: ______________; occurs when members of two populations have different breeding seasons: ______________; occurs when sperm from one species fails to fertilize the eggs of another species: ______________; occurs when the sexual organs of two species are incompatible: ______________.