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Down syndrome
Down syndrome affects approximately 1 out 770 babies. Any woman can give birth to a child with Down syndrome, but the risk increases with the mother’s age when pregnant.

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Trisomy 21 Down syndrome

Chromosomes are structures within each of our cells that contain all our genetic information. Normally, each cell contains 23 pairs of chromosomes. Some abnormalities however, can happen after conception. Trisomy 21, commonly known as Down syndrome, is a condition caused by the presence of an extra copy of chromosome 21 (or part of a chromosome) in each cell. Although trisomy is a genetic disorder, it is rarely inherited.
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