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Down Syndrome
A genetic disorder caused by the presence of all or part of a third copy of chromosome 21, characterized by physical growth delays, characteristic facial features, and mild to moderate intellectual disability.
Sex-linked Disorders
Genetic diseases that are passed through sex chromosomes, typically resulting in disorders more frequently in one sex than the other.
Phenotype
The set of observable characteristics of an individual resulting from the interaction of its genotype with the environment.
Karyotype
A complete picture of an individual’s chromosomes, used to look for abnormalities.
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