About: Down Syndrome   Sponge Permalink

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Down syndrome (US, Canada and other countries) or Down's syndrome (UK and other countries) encompasses a number of chromosomal abnormalities, causing highly variable degrees of learning difficulties as well as physical disabilities. It is named for John Langdon Down, the British doctor who first described it in 1866.

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  • Down Syndrome
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  • Down syndrome (US, Canada and other countries) or Down's syndrome (UK and other countries) encompasses a number of chromosomal abnormalities, causing highly variable degrees of learning difficulties as well as physical disabilities. It is named for John Langdon Down, the British doctor who first described it in 1866.
  • Down syndrome (DS or DNS) 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. It is typically associated with physical growth delays, characteristic facial features, and mild to moderate intellectual disability. 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 varies widely.
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abstract
  • Down syndrome (US, Canada and other countries) or Down's syndrome (UK and other countries) encompasses a number of chromosomal abnormalities, causing highly variable degrees of learning difficulties as well as physical disabilities. It is named for John Langdon Down, the British doctor who first described it in 1866.
  • Down syndrome (DS or DNS) 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. It is typically associated with physical growth delays, characteristic facial features, and mild to moderate intellectual disability. 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 varies widely.
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