Birth Defects was written for healthcare workers who look after individuals with birth defects, their families, and women who are at increased risk of giving birth to an infant with a birth defect.Special attention is given to:* modes of inheritance* medical genetic counselling* birth defects due to chromosomal abnormalities* single gene defects* teratogens* multifactorial inheritanceThis book is being used in the Genetics Education Programme which trains healthcare workers in genetic counselling in South Africa.