> The mutation just have to be not too bad. And even bad one can survive forever if not everyone with it dies. Exactly. I have green eyes which is technically

> The mutation just have to be not too bad. And even bad one can survive forever if not everyone with it dies. Exactly. I have green eyes which is technically a genetic mutation. I do not think it provides any advantages, but it also causes no harms. It just is what it is.