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The impetus for this book arose out of my previous book, The Evolution of Life Histories (Roff, 1992). In that book I presented a single chapter on quanti­ tative genetic theory. However, as the book was concerned with the evolution of life histories and traits connected to this, the presence of quantitative genetic variation was an underlying theme throughout. Much of the focus was placed on optimality theory, for it is this approach that has proven to be extremely successful in the analysis of life history variation. But quantitative genetics cannot be ig­ nored, because there are some questions for which optimality approaches are inappropriate; for example, although optimality modeling can address the ques­ tion of the maintenance of phenotypic variation, it cannot say anything about genetic variation, on which further evolution clearly depends. The present book is, thus, a natural extension of the first. I have approached the problem not from the point of view of an animal or plant breeder but from that of one interested in understanding the evolution of quantitative traits in wild populations. The subject is large with a considerable body of theory: I generally present the assumptions underlying the analysis and the results, giving the relevant references for those interested in the intervening mathematics. My interest is in what quantitative genetics tells me about evolutionary processes; therefore, I have concentrated on areas of research most relevant to field studies.

576.5 --- 575.16 --- 631.523 --- 575.822 --- Evolutionary genetics --- Quantitative genetics --- 575.1 --- Quantitative inheritance --- Genetics --- Genetic evolution --- Evolution (Biology) --- Cell interactions. Intercellular junctions. Cell populations. Cell behaviour in culture --- Developmental genetics. Genetic basis of ontogenesis --- Applied genetics --- Heredity and variation --- Heredity. Inheritance --- Evolutionary genetics. --- Quantitative genetics. --- Biological Processes --- Genetic Processes --- Genetic Phenomena --- Phenomena and Processes --- Biology --- Biological Phenomena --- Biological Science Disciplines --- Natural Science Disciplines --- Disciplines and Occupations --- Biological Evolution --- Genetic Variation --- Genetics, Population --- Health & Biological Sciences --- 575.1 Heredity. Inheritance --- 575.822 Heredity and variation --- 631.523 Applied genetics --- 575.16 Developmental genetics. Genetic basis of ontogenesis --- 576.5 Cell interactions. Intercellular junctions. Cell populations. Cell behaviour in culture --- Evolutionary biology. --- Human genetics. --- Evolutionary Biology. --- Human Genetics. --- Heredity, Human --- Human biology --- Physical anthropology --- Animal evolution --- Animals --- Biological evolution --- Darwinism --- Evolutionary biology --- Evolutionary science --- Origin of species --- Evolution --- Biological fitness --- Homoplasy --- Natural selection --- Phylogeny