Researchers on all sides of the nature vs nurture debate agree that the link between a gene and a behavior is not the same as cause and effect. While a gene may increase the likelihood that you’ll behave in a particular way, it does not make people do things. Which means that we still get to choose who we’ll be when we grow up.
So, was the way we behave engrained in us before we were born? Or has it developed over time in response to our experiences?