This is the latest edition of the core text for courses in molecular biology, genetics, cell biology, and related disciplines. "Genes V" provides more introductory material than earlier editions. The contents have been thoroughly revised, reflecting new knowledge and advances. A brand new section on cell biology integrates material scattered throughout previous editions with the latest developments. The whole bookhas a greater coherence and more logical structure than ever before. This is reflected by a design which should help to illustrate major points and summarize large amounts of work. People who should find this book interesting include undergraduates in the second, third or fourth years (and sometimes even the first year) of a degree course in molecular biology, biochemistry, genetics, microbiology, virology, cell biology, or preclinical medicine. Research students and scientists who need a thoroughly up-to-date, well-integrated, and authoritative account of the science which may not be their original discipline but has a major impact on their work and that of their competitors should also find this book of interest.