The purpose of this book is to provide a comprehensive, inter-disciplinary text for science and medical students, and others wishing to up-date their knowledge of reproduction and related social issues. Because the book follows the content of the third year university biology course I teach, some background knowledge in animal physiology and biochemistry is assumed. The text is also intended to be thought provoking for those with little biological background who may be challenged to pursue the subject further. At the end of each chapter the General references section has sufficient documentation for the reader to find the source of most of what is discussed.

The 1980s have been an exciting decade in the reproductive sciences because of the substantial contributions which have come from all its subdisciplines. This is reflected in the overall structure of the book, which is aimed at an increased awareness of human reproductive issues and their consequences across disciplines. Theories and principles are integrated to create a holistic overview.

I especially owe a dept to Roger Hiller for critically reading all my drafts, for generously giving expert advice and for engaging in probing discussions throughout the gestation of this book. Roger's well-judged criticism resulted in important modifications and improvements, and his insistence on clarity of expression saved me from many blunders. I also owe a debt to David Pollard who read the entire manuscipt and gave generously of his talents and time.