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List of people with Down syndrome
From Wikipedia, the free encyclopedia
This is a list of people with Down syndrome, a condition also known as Down's syndrome or trisomy 21. Down syndrome is a genetic disorder caused by the presence of all or part of a third copy of chromosome 21.[1] It is typically associated with developmental delays, characteristic physical features, and mild to moderate intellectual disability.[2] The average IQ of a young adult with Down syndrome is 50, equivalent to the mental age of an 8- or 9-year-old child, but this number varies widely.[3] At the same time, they enjoy a rich social and emotional awareness.[4] Down syndrome is the most common chromosome abnormality in humans,[3] occurring in about one per 1000 babies born each year.[2]
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