Down Syndrome

buck Syndrome         According to Dr. Stephen Trumble there is evidence in antique ruse of bulk with trisomy 21 being part of the concede 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 spate in his congregation of mentally retarded patients. He published and canvass 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 big bucks Syndrome, in the early part of the twentieth century people vox populi process many things could be the cause. In 1959 both scientists, Jacobs and Lejeune, running(a) separately, entrap the cause to be trisomy 21.          This trisomy involves genetics. All people cede cellular phones in their bodies, and these cells carry the individual set of traits that typeset many things like c haracteristics, growth, and development. All of these traits ar controlled by genes, which ar located in chromosomes. at that place 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 trisom y 21, which makes up or so ninety five perc! ent 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. other type of Down Syndrome is translocation. Translocation occurs when and extra twenty- one chromosome has translocated on to another... If you call for to get a full essay, order it on our website: OrderCustomPaper.com

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