Does hair around the b hole serve any purpose? Did it in the past? It’s it more just an aesthetic thing? Are there any draw backs and down sides to having hair around the b hole?
In: Biology
Traits that aren’t detrimental aren’t necessarily bred out of a population. So, while ass hair may help with friction or maintaining a suitable microbiome for bacteria, the real answer is that our pre-human ancestors were much hairier and somewhere along the way random mutations in DNA led to populations with less hair; then, eventually, the hair we have left hasn’t been harmful enough to be bred out – which would require either a random mutation for less or no hair to spread by either being more beneficial or just chance, or extinction, the ultimate breeding out.
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