system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How is it that we can breed a lion with a tiger and not a human with another type of Ape?
gpt
We have 23 pairs of chromosomes, other apes have 24. A viable offspring needs the same number from each parent, it can't have 23 pairs and one extra lonely one.

Other species can create hybrids because they happen to have the same number of pairs, such as lions and tigers.