Sherlock (philosophy, Utah State U.) and Morrey (animal, dairy, and veterinary sciences, Utah State U.) present a textbook/reader that is based on the premise that in order to think about the ethical controversies arising over biotechnologies, one must have a firm understanding of the science behind the technologies. Each section introduces material on basic science and ethical concerns before moving onto more specific discussions. Sections address agricultural biotechnology, food biotechnology, animal biotechnology, human genetic testing and therapy, and human cloning and stem cell research. Thirty-four readings are presented in all. Annotation c. Book News, Inc., Portland, OR (booknews.com)