Synopsis The universe of the cell is complex and diverse. Link the world around us, the world ofg the cell is one of forms specialized for particular type of existence. And as in the larger universe of plant and animal kingdoms, where one can perceive basic life sustaining processes common to all organism, in the the cellular world many of the same processes and structures can be found in almost all cells. It seems to be an axiom of nature that where there is diversity, there is also similarly. These observations have been co-related scientifically and compiled under one heading the Evolutionary Biology. This book brings together the various biological phenomena concerning the fact of evolutionary biology in as lucid and logical a manner as possible. The subject matter, both as regards the arrangement of chapters as well as the content of each chapter has been so graded proceeding from simple to more difficult topics, that a student may follow the course with great ease and interest.