The first edition of Jim Watson's classic textbook Molecular Biology of the Gene appeared in 1965. This new edition, written with five new authors, has been brought fully up to date, and incorporates insights very recently derived from genome sequencing in a variety of organisms. The book is an authoritative and comprehensive survey of the fundamentals of molecular biology, from basic mechanisms to the elaborate role of gene regulation in embryonic development and evolution. Although updated, the twenty–one chapters of the new edition retain the distinctive and celebrated features of the original work, including introductory chapters on the history of genetics and molecular biology and an emphasis throughout on the chemical underpinnings of molecular biology. The new team of authors brings to this edition award–winning teaching experience and outstanding research achievements. By revealing the intellectual framework and experimental approaches that made new discoveries in the field possible, the new edition highlights the significance of the molecular approach for all of biology.