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Goldman, Allen S.; And Others – 1981
There are two general categories (not necessarily mutually exclusive) of congenital defects: (1) abnormalities that have an hereditary basis, such as single and multiple genes, or chromosomal abberration; and (2) abnormalities that are caused by nonhereditary factors, such as malnutrition, maternal disease, radiation, infections, drugs, or…
Descriptors: Biochemistry, Congenital Impairments, Embryology, Genetics
