UNIT 4 Genetic conditions of adolescents and adults 🌿 Genetic Conditions of Adolescents and Adults Genetic conditions are inherited or caused by mutations in genes or chromosomes. They can manifest in adolescence or adulthood, even if the individual appeared healthy at birth. 🔹 Common Genetic Conditions in Adolescents & Adults: Condition Description Onset Key Features Huntington’s Disease Autosomal dominant neurodegenerative disorder Usually 30–50 years Involuntary movements, mood changes, cognitive decline