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Genetic Blueprints. To map the chimp genome, researchers used DNA from the blood of a male common chimpanzee (Pan troglodytes) named Clint, who lived at the Yerkes National Primate Research Center in Atlanta. Clint died last year from heart failure at the relatively young age of 24. A comparison of Clint's genetic blueprints with that of the human genome shows that our closest living relatives share 96 percent of our DNA.
Humans, Chimps, and the 1 Percent. Even with 98+ percent identical DNA, chimps and humans are so very different. Virtually the entire genomes of both chimpanzees and humans has been mapped out in some detail. At the level of the whole genome, about 98.7 percent of the nucleotides in human and chimp DNA are exactly the same. Another way to say this, of course, is that we only differ from chimps at 1.3 percent of our DNA base pairs. Yet chimps and humans look and act quite differently from one another.