This curriculum module explores genes, environment, and human behavior. This book provides materials to teach about the nature and methods of studying human behavior, raise some of the ethical and public policy dilemmas emerging from the Human Genome Project, and provide professional development for teachers. An extensive Teacher Background section, including discussion of many new discoveries in the genetics of human behavior and the ethical, social, and legal implications, is included. The module also features five Classroom Activities with teacher pages, copymasters, and student pages. Contains 88 references. (WRM)