Epigenetics

http://www.youtube.com/watch?v=kp1bZEUgqVI&list=UUZYTClx2T1of7BRZ86-8fow&index=5&feature=plcp

This video talks about Epigenetics, which literally means 'above genetics.' Epigenetics does not change your actual genes, but it decides how the genes are expressed. The video explains exactly what the science behind Epigenetics is and how it relates to the long lost twin scenario. He also talks about passing down things such as the tendency to smoke, or get a face tattoo as examples. He explains the old idea of intelligence being effected by your genes. He says you have to look at Epigenetics and social factors when looking at intelligence, not just genes.