An invaluable resource that will guide new research on the major groups within the fungal kingdom.Provides illuminating insights into the molecular details of cell-type specification, mating-type switching, pheromone perception and signaling, and cellular and nuclear fusion. Includes chapters on both model and pathogenic fungi, as well as a section that looks forward to what we hope to learn in other fungal lineages. Concludes with a selection of chapters on the implications of sex and studies of experimental evolution in a broader evolutionary context.