Question

Mules, the offspring of donkeys and horses, are commonly used as pack animals. Despite the existence of mules, horses and donkeys are considered separate species.
Which discovery would change that thinking and define horses and donkeys as the same species?

Answer 1

AngelYbarra0809, you were supposed to provide the Answer Key of A, B, C, and D. Watch out when you ask a question, because you have to provide information.

Answer 2

Answer:

Mule is that discovery which changes the idea that horse and donkey belong to the same specie.

Explanation:

When male donkey mate with female horse, mule is produced but two mules cannot produce another mule because they are infertile. So according to the definition of specie, species are the organisms which mate with each other and produce a fertile offspring. So according to this definition, donkey and horse are two different species.