Molecular biology and biotechnology have emerged as the thrust areas in biological sciences. The tremendous impact generated by the discovery of gene structure isolation and unravelling its function has led to researches to solve the enigma of life processes. The surge of literature is making it increasingly difficult to compile all the new information together. The rapid development coupled with successes make it imperative to bring together the available data for the benefit of interested researchers. The present book is an attempt in this direction. The volume comprises 16 chapters spread over 250 pages. These chapters relate to various aspects of molecular biology that would prove informative to the readers. The last two articles although do not conform to the basic theme .of molecular biology deal with the applications of the new technology that can be realized.