This volume provides a comprehensive description of the basic tenets of molecular biology, from mechanisms to its elaborate role in gene regulation. The initial sections cover the history of genetics and molecular biology. The book then goes on to highlight the significance of molecular approaches for all biological processes in both simple and complex cells. The volume incorporates the most recent research from this ever-evolving field. The authors have described experimental approaches wherever necessary to present evidence that has led to the development of important concepts and significant advances in molecular biology.