Quote Originally Posted by Number 9 large View Post
and how does this change personality or dna?
You still haven't explained what you mean by "personality".

But according to studies with Big Five traits: "Twin studies and other research have shown that about half of the variation between individuals results from their genetic inheritance and half from their environment. Researchers have found conscientiousness, extraversion, openness to experience, and neuroticism to be relatively stable from childhood through adulthood."