Genetics of the evolutionary process - Dobzhansky, Theodosius 1900-1975 (Columbia University Press, 1971)
Contents: The unity and diversity of life – Genetic continuity and change – Mutation and genetic variability – Normalizing natural selection – Balancing selection and chromosomal polymorphisms – Balancing selection and genetic load – Directional selection – Random drift and founder principle – Populations, races, and subspecies – Reproductive isolation – Patterns of species formation – Patterns of evolution