The Disorder Of Down Syndrome

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Have you ever wonder or questioned the disorder of down syndrome? According to many National Down Syndrome Society within the United States, Down syndrome has occurred one out of eight hundred births. It is the most frequent form of mental retardation and characterized by well-defined events and distinctive features. It’s a lifelong disorder caused by a genetic defeat that’s none curable. It takes people with patients and kind hearts to care for people with Down syndrome disorder. History In the late nineteenth century John Langdon Down, an English physician published the description of a person with Down syndrome. In 1866 his scholarly work was published that gave him the name “father” of Down syndrome. Where in 1959 the French…show more content…
Its termed trisomy 21 due to the fact it’s not an entire extra chromosome 21 that is responsible but rather a small segment of the long arm of this chromosome. Only two other triomies occurs with any significant frequency: trisomy 13 (Patau’s syndrome) and trisomy 18 (Edwards’ syndrome). Trisomy 21 is one of the most common human chromosomal aberrations occurring in about 0.5 percent of all conceptions and in one out of every seven hundred to eight hundred live birth. Description When the sperm cells from the father and the egg cells from the mother are formed, they both undergo a reduction of their total number of chromosome from forty-six to twenty-three. This process is called meiosis (which contain one-half of the chromosome number found in the original cell before division) when a baby is conceived by the combination of one sperm cell with one egg cell, the baby receives twenty-three chromosomes from each parent for a total of forty-six chromosomes. Occasionally, an error occurs in the reduction process instead of passing on twenty-three
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