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Beginning of Paper
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Down Syndrome
In one in every one thousand births, an extra chromosome results in the birth of a baby with Down's Syndrome; a genetic disorder resulting in mental retardation.
In 1866, physician John Langdon Down, in Surrey England, identified a set of children with common features of mental retardation. Down was first to identify a similar link of symptoms in many patients. Thus, the new disorder was named "Down's Syndrome". ....
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Middle of Paper
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.... to another chromosome pair.
The last 1% have Mosaicism, where only some cells of the chromosome have extra genetic material.
With the different types of Down's the degree of retardation ranges from mild to sever. Alleles don't effect every patient in the same way, and therefore different effects of the disease are presented in each case.
Patients with Down's Syndrome can lead almost normal lives and be just as healthy as other children; but Down's has no cure, and therefore symptoms r ....
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