Synopsis This book "Advances in Molecular Biology" is written for the students of graduates, post graduate classes. This book is very useful for the research students. The Language is kept simple keeping in view the general reader. The examples taken are very selective and are of great important. A comparative analysis is also make as where required. The author is hopeful to those who have a flair of learning about the Molecular Biology. It is sincerely hoped that this book will satisfy the needs of the students and general reader’s and give them even part of pleasure that the author has put in its preparation he will consider his labour amply rewarded.