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 Ayala, W. Ford Doolittle, and Stephen Jay Gould. The volume examines early cellular evolution, explores changes in the tempo of evolution between the Precambrian and Phanerozoic periods, and reconstructs the Cambrian evolutionary burst. Long-neglected despite Darwin's interest in it, species extinction is discussed in detail. Although the absence of data kept Simpson from exploring human evolution in his book, the current volume covers morphological and genetic changes in human populations, contradicting the popular claim that all modern humans descend from a single woman. This book discusses the role of molecular clocks, the results of evolution in 12 populations of Escherichia coli propagated for 10,000 generations, a physical map of Drosophila chromosomes, and evidence for "hitchhiking" by mutations.
Walter M. Fitch and Francisco J. Ayala, Editors, for the National Academy of Sciences
1 Front Matter; 2 Early Life; 3 Tempo, Mode, the Progenote, and the Universal Root; 4 Phylogeny from Function: The Origin of tRNA Is in Replication, not Translation; 5 Disparate Rates, Differing Fates: Tempo and Mode of Evolution Changed from the Precambrian to the Phanerozoic; 6 Proterozoic and Early Cambrian Protists: Evidence for Accelerating Evolutionary Tempo; 7 Macroevolution; 8 Late Precambrian Bilaterians: Grades and Clades; 9 The Role of Extinction in Evolution; 10 Tempo and Mode in the Macroevolutionary Reconstruction of Darwinism; 11 Morphological Evolution Through Complex Domains of Fitness; 12 Human Evolution; 13 Tempo and Mode in Human Evolution; 14 Molecular Genetics of Speculation and Human Origins; 15 Rates; 16 Rates and Patterns of Chloroplast DNA Evolution; 17 The Superoxide Dismutase Molecular Clock Revisited; 18 Patterns; 19 Dynamics of Adaptation and Diversification: A 10,000-Generation Experiment with Bacterial Populations; 20 Explaining Low Levels of DNA Sequence Variation in Regions of the Drosophila Genome with Low Recombination Rates; 21 The History of a Genetic System; 22 Genome Structure and Evolution in Drosophila: Applications of the Framework P1 Map; 23 Index