The idea that humans and chimpanzees share 99% of their DNA is slightly misleading because it does not consider the role of epigenetics. User aron0405, in the Reddit Science subreddit, 03 Dec 2012
"Human-specific" diseases a bi-product of evolved intellect, and a result of epigenetic control in neurons User heidavey, in the Evolution subreddit, 21 Nov 2012