A statistical test that supports a human/chimpanzee clade based on noncoding DNA sequence data

Using the aligned DNA sequence data of Miyamoto et al. and Maeda et al.,all noncoding genetic material, and a simple statistical test, we show thata Homo/Pan clade is supported at approximately the 3% level ofsignificance. The method accommodates polymorphism and differentevolutionary rates for different sites. All assumptions on which thestatistical study is based are made explicit. (See the Note added in proof,which--adding recently published data--improves the significance level toabout 1%.