It's called Epigenetics; our environment actually influences which genes turn on and off: http://www.time.com/time/magazine/article/0,9171,1952313,00.html http:

It's called Epigenetics; our environment actually influences which genes turn on and off: http://www.time.com/time/magazine/article/0,9171,1952313,00.html http://www.time.com/time/magazine/article/0,9171,1952313,00....