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

…. From my college biology (so take that as you may)…inbreeding doesn’t ALWAYS have adverse side effects. It can and sometimes does. You tend to get exaggerated genetics. So if two “bad” genes pair, you get really bad genetics. If two “good” genes pair, you get really good genetics. If none do, you are ok.