Down Syndrome (Genetic Disorter)
Down syndrome (DS) is a genetic condition where a person is born with an extra copy of chromosome 21. In 1866, Doctor John Langdon Down first described Down syndrome as a disorder, but he misunderstood how Down syndrome arises. The reason of Down syndrome was discovered recently in 1959. Down syndrome is a genetic disorder and the most common cause of cognitive impairment.There are more than 400,000 people living with Down syndrome in the U.S. Roughly 25% of families in the U.S. are affected by Down syndrome.
- While behavior, mental ability, and physical development varies from person to person, many individuals with Down syndrome grow up to hold jobs, live independently, and enjoy normal recreational activities.Since the 1970s, public schools are required by law to have a free and appropriate education to children with Down syndrome.