Since George Gaylord Simpson published Tempo and Mode in Evolution in 1944, discoveries in paleontology and genetics have abounded. This volume brings together the findings and insights of today's leading experts in the study of evolution, including Francisco J. Ayala, W. Ford Doolittle, and Stephen Jay Gould. It covers morphological and genetic changes in human populations, contradicting the popular claim that modern humans descend from a single woman.
