Genome sequencing is beginning to show how evolution works. Individual genes are being identified for particular traits. The single gene AH11 is believed to be responsible for walking upright and appears in the human genome but chimpanzees have a modified version. The chimp gene MYH16 is a strong jaw protein which prevents skull growth which would allow for a larger brain and humans have a mutated form of that gene. Chimps have the same number of base pair genomes as humans … 2.9 billion.

(The Great Courses – Understanding Genetics: DNA, Genes, and Their Real-World Application)