This work is a contribution to the fields of gametogenesis, gamete transport, fertilization, and reproduction technologies. Key topics covered include: formation and maturation of male gametes; morphology and physiology of female gametes; how the sperm meets the egg; sperm-egg fusion, egg activation, and implantation of fertilized egg; assisted reproduction and environmental chemicals that have an effect on formation and function of male and female gametes. This book is for both researchers and students involved in reproductive biology.