Question

How is it possible for a horse and a donkey to create a mule? Are there any other examples of inter-species breeding in nature?

Answer 1

Answer:

Horses have 64 chromosomes and donkeys 62, so when the two breed their mule offspring ends up with 63. Because this is an odd number, it's impossible for them to divide evenly into two. That means the mule cannot produce sperm and egg cells that carry exactly half the animal's chromosomes, as should happen.Aug 28, 2018