This text presents human reproduction from the biological point of view. It is most appropriate for use by non-science students who would like a biological understanding of human reproduction. The three parts of the book may be studied in whatever sequences the instructor desires. Part I contains topics on human inheritance and biotechnology. Part II has in depth coverage of fertilization, and the major biological events of embryonic and fetal development. In Part III, the evolution of sexual reproduction is presumed to have increased biological fitness.