if procreating with close relatives causes dangerous mutations and increased risks of disease, how did isolated groups of humans deal with it?

Question

if procreating with close relatives causes dangerous mutations and increased risks of disease, how did isolated groups of humans deal with it?

In: 562

Answer 1

It increases the *risk*.

Also to some degree, early groups had a built in defense against genetic disease: those with it just straight up died.

There are many *many* species in the wild who went through major population pinches. It can cause problems, but can also reinforce specializations (like cheetahs)… And survival today is more important than potential issues down the road.