The genomes of humans and chimpanzees are 99 percent similar;however,many evolutionary biologists believe that most of the phenotypic differences between the two species involve

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While the genomes of humans and chimpanzees are highly similar, the phenotypic differences between the two species are largely due to changes in DNA regulatory and developmental protein factors, which can result in differences in gene expression, developmental pathways, and morphology. This is supported by studies that have found differences in regulatory regions of genes between the two species, in addition to differences in the expression of genes involved in brain development, immune response, and other phenotypic traits.

The Genomes of Humans and Chimpanzees Are 99 Percent Similar;however,many