A sterile mule is produced by mating a horse and a donkey.This is an example of ____ reproductive isolation.

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The production of a sterile mule is an example of postzygotic reproductive isolation because it occurs after the mating of a horse and a donkey has taken place and results in the offspring being incapable of reproducing. Prezygotic reproductive isolation occurs before the fertilization of an egg, while allopatric and sympatric refer to geographic barriers to reproduction. Outgroup is unrelated to reproductive isolation.

A Sterile Mule Is Produced by Mating a Horse and a Donkey.This