For nearly three decades, from edition to edition, An Introduction to Genetic Analysis (IGA) has evolved side by side with genetic research, providing an experiment based introduction to fundamental concepts that reflects every major laboratory and conceptual breakthrough. With authors who are leading researchers, innovative educators, and acclaimed writers, the book has kept pace with the dramatic expansion of the field while finding better ways to help students learn how to put genetics concepts to work. Now the text that has been used by over three quarters of a million students returns in the most extensively revised new edition in the book's history, once again shaping its coverage to match current research and thinking in genetics while providing stronger pedagogical support. The edition features a new co author (Susan R. Wessler, a member of the National Academy of Sciences), dramatic new content and art, reorganized structure, new learning tools, and state of the art media and supplements, making it the ideal text for preparing today's students for tomorrow's genetics.