why are mules infertile? If a horse and a donkey have close enough genetics to have offspring, why is that offspring left with genetics that render them unable to have their own offspring?

Question

why are mules infertile? If a horse and a donkey have close enough genetics to have offspring, why is that offspring left with genetics that render them unable to have their own offspring?

In: 8368

Answer 1

Sheep and Goats can breed too, the offspring is called a Geep:

https://en.wikipedia.org/wiki/Sheep%E2%80%93goat_hybrid