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Write a note on down's syndrome....

Write a note on down's syndrome.

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Down.s syndrome: This condition was first identified by a doctor named Langdon Down in 1866.
It is a genetic condition in which there is an extra copy of chromosome 21 (Trisomy 21). It is associated with mental retardation, delayed development behavioural problems, weak muscle tone, vision and hearing disability are some of the Conditions seen in these children.
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