Why Can't Mules Have Babies?

The video explores the rarity of hybrid animals reproducing, focusing on mules, a hybrid of a female horse and a male donkey, which are typically infertile. It explains the genetic challenges hybrids face in producing viable sex cells due to mismatched chromosomes from different species. However, rare cases exist where female mules have reproduced, bypassing typical genetic processes, resulting in offspring genetically similar to their mothers. This phenomenon is compared to cultural metaphors for impossibility, like 'when pigs fly.'

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