Biology is a branch of science which is concerned with the study of life. It focuses on the physical structure, physiological mechanisms, development and evolution of living organisms. In biology, cell is considered as the basic unit of life. The discipline of biology is broadly classified into theoretical biology and experimental biology. Theoretical biology makes use of mathematical techniques for the formulation of quantitative models. Empirical biology deals with experiments which are used for testing the validity of proposed theories. Some of the basic concepts of modern biology are cell theory, evolution, genetics and homeostasis. Certain biological phenomena such as cell division, reproduction and transmission of genetic material are also studied in this field. The various sub-fields of biology along with technological progress that have future implications are glanced at in this book. The topics included herein on biology are of utmost significance and bound to provide incredible insights to readers. This book, with its detailed analyses and data, will prove immensely beneficial to professionals and students involved in this area at various levels.