The first edition of Maynard Smith's Evolutionary Genetics (first published in 1989) was welcomed as the first comprehensive introduction to the molecular and population aspects of evolutionary genetics, and has now become one of the definitive textbooks in the field. Aimed at advanced undergraduates in the biological sciences, the book covers basic population and quantitative genetics, evolutionary game theory, behavioural evolution, sexual selection and mating systems, speciation, and macroevolution. Theory and mathematics are clearly explained, with the aid of problems at the ends of the chapters, and the author takes care to place these within the context of questions central to current research in evolutionary biology. This Second Edit.