The scope and purpose of this book is to make available to the university students a handy volume containing complete exposition of cell cycle, cell division molecular events of the cell cycle apoptosis programmed cell death and cancer. It is simplified and conceptual and will clear all the doubts related to different events of cell cycle and differentiate between normal cell death and cancer. It will also relate with the molecular aspects of the cell cycle and information related to genes and protein responsible for controlling normal cell cycle.