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1. en.wikipedia.org › wiki › Down_syndromeDown syndrome - Wikipedia

   en.wikipedia.org › wiki › Down_syndrome

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   Hace 14 horas · 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. [3] It is usually associated with developmental delays, mild to moderate intellectual disability, and characteristic physical features. [1] [12] There are three types of Down syndrome, the ...

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