From Chimp to Human
Chimp and Human Common Ancestor dates to 5 to 7 million years ago


Varke and Altheide compare human and chimpanzee genomes to explore the relationship of primate evolution human physiology and disease. Their work suggests the last common ancestor of humans and chimpanzees dates to 5 to 7 million years ago (Mya). The difference between the two genomes is actually not often quoted 1%, but about 4% based on 35 million single nucleotide differences.

Varki A, Altheide TK, Comparing the human and chimpanzee genomes: Searching for needles in a haystack. Genome Research, 15 (12): 1746-1758 Dec 2005