Down Syndrome

Down syndrome Down syndrome is the most common genetic disorder in children. One in 1,000 people was diagnosed as more general DS (Leshin, 2000). DS was first observed by British physician John Langdon Down in 1866. However, there is only an inference about the cause of this debilitating disease. In 1959, Jerome Lejeune and Patricia Jacobs discovered the real reason. Trisomy of chromosome 21 leads to the characteristics of DS and its weakness (Leshin, 2000).

Down syndrome is an increasingly common disease in the United States. This is an inherited disorder caused by extra chromosome 21. One in 800 births is Down Syndrome (National Down Syndrome Association). Down syndrome is the most common form of identifiable delay (Ludman and Wynbrandt, p. 23) and genetic disease (National Down Syndrome Association). Down syndrome was initially thought to be a disease by John Langdon Down in 1866 and is called "father" of Down Syndrome with the same name as Down. The original name of Down's syndrome was "a fool of Mongolia" due to the inclination of the eyes and a flat face (National Down Syndrome Association). He believes this is a counterattack against Mongolian ancestors, but that word is now considered outdated and aggressive. But centuries ago, the characteristics of Down's syndrome were discovered in art, literature and science (National Down Syndrome Association).

Down Syndrome, formerly known as the "Mongolian", is characterized by the characteristics of a person with Down's syndrome that resembles Mongolian Asians. Down syndrome occurs to about 1 in about 800 newborns around the world. When a person inherits all or part of an extra copy of chromosome 21, it causes Down's syndrome. For unknown reasons, this can happen in various ways. The most common chromosomal abnormalities that cause Down's syndrome (about 95% of all cases) are trisomy 21, a defect in which there is an additional third copy of chromosome 21 in all cells in the body. 21 The risk of trisomy is directly related to the age of the mother. For an 18-year-old mother, the number of births of Down's syndrome is relatively small, and about 2 out of 2,100 newborns are born. In the late birth, the risk has increased significantly - from the birth of 1000 people of a 30 year old woman to one of 100 women of a 40 year old woman

Down syndrome is a combination of birth defects including some mental retardation and characteristic facial features. It is also known as trisomy 21 syndrome. Down syndrome occurs when abnormality occurs in chromosome 21. One person was found for about 1,000 births. Every year in the United States 3,000 to 5,000 people are diagnosed with Down's syndrome. The official story began in 1866 when a doctor named John Langdon Down explained the group of children with different common characteristics from other children who initially had mental retardation. Down, at a shelter for mentally retarded children in Sally in the UK, when he first identified cretine (later found to be hypothyroidism) and a child he called "Mongoloid" did. According to this unfortunate name, this unfortunate name is that these children looked like people in Mongolia and were later considered arrested for development.