DNA is a molecule which forms the very basics of life. DNA engineering is a constantly evolving field concerned with applying biotechnological techniques to alter the genes in order to achieve any set of desired characteristics. This book traces the progress of this field and highlights some of its key concepts and principles. It elucidates new and innovative techniques along with their applications in a multidisciplinary approach. This book studies, analyses and upholds the pillars of DNA engineering and its utmost significance in modern times. It is meant for students, researchers, experts and professionals who are looking for an elaborate reference text on this field.