This text introduces the principles of genetics and statistics that are relevant to population studies, and examines the forces affecting genetic variation from the molecular to the organismic level. Included are descriptions of molecular methods, as well as explanations of the relevant estimation theory using actual data.

"It is a pleasure to read this new edition of a classical textbook on population genetics. It shows very convincingly how population genetics has been revamped in the past twenty years by the introduction of new statistical and computational methods (in particular, coalescent theory), and the advent of genomic data, as well as how these developments changed a formerly rather arcane science and moved it toward the center of modern biology. In summary, the essence of population genetics is nicely condensed in this book. The presentation is wonderfully balanced between theory and observation, as well as classical and recent data sets and analysis tools." - Wolfgang Stephan, The Quarterly Review of Biology