horses and donkeys can mate, but they produce a mule, which is always a sterile animal. this means that they…

horses and donkeys can mate, but they produce a mule, which is always a sterile animal. this means that they cannot produce viable offspring and are isolated.
Answer
Brief Explanations:
Horses and donkeys are different species. Reproductive isolation occurs when different species cannot produce fertile offspring. Since mules are sterile, horses and donkeys are reproductively isolated.
Answer:
reproductively