As a result of a failure of the twenty-first pair of chromosomes to separate during meiosis, aziz received three of these chromosomes rather than the normal two. Aziz has __________ syndrome.
Down syndrome or trisomy 21 is a genetic disorder which results in physical growth delays and mild / moderate intellectual disability. Patients with this disorder have characteristic facial features and their IQ is usually equivalent to the mental ability of an 8 or 9-year-old child.
