A century after Down syndrome was first described, scientists discovered that the root cause of this disorder is a condition called trisomy 21. What strides ... slant to the eye, a flat nose ...
Down Syndrome, known as Trisomy 21, is a genetic disorder caused by an extra chromosome 21. It affects facial appearance, ...
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Verywell Health on MSNMosaic Down Syndrome: What to Know About This Genetic ConditionMedically reviewed by Brigid Dwyer, MD Mosaic Down syndrome is a variant of Down syndrome. Down syndrome is a congenital ...
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