Contributors.Preface.CROPS.1. Crop Domestication as a Long-term Selection Experiment (Paul Gepts).2. Long-term Selection in Plants in the Developing World (J.W. Miles and S. Pandey).3. Trends in Productivity of U.S. Crops and Long-term Selection (William F. Tracy, et al.).4. Long-term Selection in a Commercial Hybrid Maize Breeding Program (D.N. Duvick, et al.).5. Long-term Divergent Selection for Ear Length in Maize (Arnel R. Hallauer, et al.).ANIMALS.6. Inferences on the Genetic of Quantitative Traits from Long-term Selection in Laboratory and Domestic Animals (William G. Hill and Lutz Bunger).7. Long-term Selection for Pupal Weight in Tribolium castaneum (W.M. Muir, et al.).BACTERIA.8. Phenotypic and Genomic Evolution during a 20,000-Generation Experiment with the Bacterium Escherichia coli (Richard E. Lenski).Subject Index.Cumulative Subject Index.Cumulative Contributor Index.