Down Syndrome

buck Syndrome         According to Dr. Stephen Trumble there is evidence in ancient ruse of bulk with trisomy 21 being part of the forgiving hasten for thousands of years. In 1866 Dr. John Langdon crush, director of an asylum in Surrey, England, was the runner to notice and describe the facial similarities of people in his congregation of mentally retarded patients. He published and essay use the word Mongol to describe them because of their supposed desireness to the people from Mongolia. During this time people didnt know the cause of Down Syndrome, in the early part of the twentieth century people thought process many things could be the cause. In 1959 two scientists, Jacobs and Lejeune, working separately, entrap the cause to be trisomy 21.

         This trisomy involves genetics. All people have cellular phones in their bodies, and these cells carry the individual set of traits that determine many things like characteristics, growth, and development. All of these traits ar controlled by genes, which are located in chromosomes. There are 46 chromosomes in a human cell, which are arranged in twenty-three pairs. During conception a baby receives twenty-three from the mother and twenty-three from the father which is how forty-six end up in a human cell. With Down Syndrome there is a problem in cell formation, which causes an especial(a) chromosome to be produced.



This gives the baby forty-seven chromosomes instead of forty-six.

        There are three different types of Down Syndrome. The first is trisomy 21, which makes up or so ninety five percent of Down Syndrome patients. This occurs when one cell has one twenty-first chromosome and the other has two twenty-first chromosomes. The aftermath is fertilized egg with three twenty-one chromosomes. Another type of Down Syndrome is translocation. Translocation occurs when and extra twenty- one chromosome has translocated on to another...

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