Down Syndrome: Trisomy 21

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I’m writing my paper on Down syndrome. Down syndrome is also known as trisomy 21. This happens when a person has a full or partial extra copy of chromosome 21. Most individuals with Down syndrome are small stature, have low muscle tone, and have upward slanted eyes. In America babies born with Down syndrome occurs one in every six hundred and ninety-one births. There is approximately four hundred thousand American’s that have Down syndrome and approximately six thousand babies born a year with this condition. John Langdon Down, an English physician in the late nineteenth century published an accurate description of a person with Down syndrome. This paper was published in 1866 and got Down the recognition as “father” of the syndrome. In later

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