Thursday, March 09, 2006
"Humans and chimpanzees have in common more than 98 percent of DNA and 99 percent of genes. Yet, in looks and behavior we are very different from them. For more than 30 years--well before either the human or chimpanzee genome had been sequenced--scientists have speculated that this might be due to the way that the common genes express themselves rather than differences in the genes themselves. A new comparison published in Nature seems to prove that theory."