Comparing Genomes Shows Split Between Chimps and People
By NICHOLAS WADE
Published: December 12, 2003
NYTimes

By comparing the human genome with that of chimpanzees, people's closest living relative, scientists have identified a partial list of the genes that make people human.Because the sequence of DNA units in the two genomes is 98.8 percent identical, it seemed that just a handful of genes might define the essence of humanity.