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Biology · Ch 4 — Principles of Inheritance and Variation

Genetic Disorders

4.8

Genetic Disorders

A genetic disorder is a disease or abnormality caused by an abnormality in an individual's DNA. These disorders can arise from mutations in a single gene (Mendelian disorders) or from changes in the number or structure of chromosomes (chromosomal disorders). The study of these disorders is a direct application of the pr …