PRAISE FOR THE SERIES "Outstanding both in variety and in the quality of its contributions." -NATURE "Can be highly recommended to geneticists, and biologists in general...will prove to be of high importance for the development of the science of genetics." -SCIENCE "The high standards of the Advances series of Academic Press are now almost taken for granted. The new volume matches up to the revolutionary and all-embracing developments in genetics that have occurred over the last few years." -SCIENCE PROGRESS "This text would be of interest to geneticists, botanists, developmental biologists, molecular biologists, and other interested individuals." -BIOLOGICAL ABSTRACTS