Essentials of Genetics 9th Edition by Michael Palladino William Klug, Michael Cummings, Charlotte Spencer

Exercise 4

The genetic difference between two Drosophila species, D. heteroneura and D. sylvestris, as measured by nucleotide diversity, is about 1.8 percent. The difference between chimpanzees ( P. troglodytes ) and humans ( H. sapiens ) is about the same, yet the latter species are classified in different genera. In your opinion, is this valid? Explain why.