Includes numerous entries that describe the condition, its prognosis, prevalence, mode of inheritance and the availability of carrier screening and prenatal diagnosis. Entries for subjects and terminology important to genetic disorders and congenital anomalies are also included.

A comprehensive collection of articles on all aspects of genetics, from Mendel to the decoding of the human genome. Explains the workings of genes and chromosomes, genetic diseases, and biotechnology. Also covers the ethical, legal, and social issues connected to genetic science. Includes full-color photos and line drawings, a glossary of scientific terms, and coverage of careers in the field.

Presents nearly 400 articles describing genetic disorders, conditions, tests, and treatments, including high-profile diseases such as Alzheimer's, breast cancer, and heart disease.