Chimps and humans differ in a variety of ways - humans have the ability to read, sing, vote and dress for dinner, whilst our chimp cousins are better adapted to climbing trees and swallowing leaves. But genetically we are extraordinarily similar. In fact 98.4 per cent of our genes are identical to those of chimps, so there must be something special about the remaining 1.6 per cent of the genome. Peter Evans meets the scientists who are exploring which genes separate us from the apes.
E-mail: scirad@bbc.co.uk