Dr. at the November 29, 2005 meeting of the NA...

Dr. at the November 29, 2005 meeting of the NASA Advisory Council, in Washington, D.C. (Photo credit: Wikipedia)

Neil Degrasse Tyson discusses work being done in the field of epigenetics. He likens epigenome to a second genome over and above our genes. This genome actually turns our genes on and off in different patterns based on the influences of our environment. He interviews Dr. Randy Jirtle of Duke University. The study collected Gene samples from 40 pairs of identical twins age 3 to 74. We know their genes were identical but what about their epi-genes? The study found that twins epi-genes were different but the differences increased with age. So even twins are not identical, their software or epigenetics differs based on how they think, what they eat, the stress in their lives and our environment.