Down Syndrome

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What is Down syndrome? Everyone has heard of Down syndrome but does anyone really know what it is and the causes of Down syndrome. The characteristics of a person with Down syndrome can be recognized by virtually everyone. A British doctor, John Langdon Down, discovered the genetic condition caused by extra genes in the 21st chromosome in 1866. Dr. Lejeune did not document the actual chromosomal nature of Down syndrome until 1959. (Thompson, McInnes, & Willard, 1991)

About 1 in 1,000 live births in the United States are born with Down syndrome. Ethnicity, socioeconomic status, culture, and geographic region have no barring on who gets

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