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Down Syndrome Report
Beginning of essay
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 kn ....
Middle of essay ....alities, 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 mot.... |
Number of words: 415 |
Approximate pages: 2 |
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