How much of a person's characteristics id defined by DNA?

Sonny R

New member
Is a person confined/defined by DNA? Or other factors mentioned below also help define him/her:

1. Life style: Food, Habits, and the Environment he lives in?
2. Experience: Familial, Social, or even Political settings he is in
3. His Convictions/Perceptions: What he choose to feel or perceive as reality from his surrounding...

So my question is are we essentially modifying our DNA as we go along with this external factor? If it's possible, then I think Genetic engineering at Pre-birth might not be all that...I mean it might be essential for curing disease...But there is more after that.
 
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