Down syndrome or Down's syndrome, also known as triso... - dofaq.co
down syndrome

Down syndrome or Down's syndrome, also known as triso...

wikipedia - 18 Feb 2022
Down syndrome or Down's syndrome, also known as trisomy 21, is a genetic disorder caused by the presence of all or part of a third copy of chromosome 21.[2] It is usually associated with physical growth delays, mild to moderate intellectual disability, and characteristic facial features.[1] The average IQ of a young adult with Down syndrome is 50, equivalent to the mental ability of an eight- or nine-year-old child, but this can vary widely.[12][8]

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