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Down Syndrome Report - College Paper

Down Syndrome Report


The chromosomal abnormality involved in most cases of Down syndrome is
trisomy-21, or the presence of three copies of the 21st chromosome. As a result,
the affected person has 47 chromosomes in all body cells instead of the normal
46, although how this causes the condition's symptoms is not yet known.
Scientists assume that the reason for the abnormal chromosomal assortment is the
fertilization of an ovum having 24 chromosomes by a sperm with a normal
assortment of 23, but they have also found that the sperm can carry the extra
chromosome as well. The abnormal ovum or sperm is derived from a germ cell in
which the pair of 21st chromosomes holds together and passes into the same sperm
or ...

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of the eyes,
small nose and mouth, and small hands and feet. Most of these characteristic do
not interfere with the child's functioning, a doctor primarily uses the
characteristics for diagnostic purposes. These physical features are variable,
and children with Down syndrome are usually more like other children than they
are different.
Individuals with Down syndrome also often have certain medical
conditions such as weak muscles, neurological impairments, heart disease,
intestinal abnormalities, poorly functioning thyroid gland, eye abnormalities,
hearing problems, and skeletal problems. Almost all children with Down syndrome
are mentally retarded, in the mild to moderate range. The degree of mental
retardation varies considerably. Through medical treatment the disorders and
infections accompanying Down syndrome have no effect on an almost normal life
span.
The overall incidence of Down syndrome is approximately one in 700
births, but the risk varies with the age of the ...

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Down Syndrome Report. (2005, June 5). Retrieved December 23, 2024, from http://www.essayworld.com/essays/Down-Syndrome-Report/28017
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"Down Syndrome Report." Essayworld.com. June 5, 2005. Accessed December 23, 2024. http://www.essayworld.com/essays/Down-Syndrome-Report/28017.
"Down Syndrome Report." Essayworld.com. June 5, 2005. Accessed December 23, 2024. http://www.essayworld.com/essays/Down-Syndrome-Report/28017.
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PAPER DETAILS
Added: 6/5/2005 10:35:27 AM
Category: Health & Medicine
Type: Premium Paper
Words: 415
Pages: 2

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