Down Syndrome 4
Title: Down Syndrome 4
Category: /Science & Technology
Details: Words: 1132 | Pages: 4 (approximately 235 words/page)
Down Syndrome 4
Category: /Science & Technology
Details: Words: 1132 | Pages: 4 (approximately 235 words/page)
Introduction
Down syndrome is a chromosomal abnormality. It is the most frequent
form of mental retardation and is characterised by well-defined, distinctive
phenotypic features and natural history. An error in cell development results
in forty-seven chromosomes rather than the usual forty-six. There are three
major types of Down syndrome. About ninety-five percent of individuals with
Down syndrome have Trisomy 21. There is also Translocation and
Mosaicism. Down syndrome can also be referred to as Mongolism, the
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the mechanism of how these
genes interfere with normal developmental sequences, and if one could
counteract these specific actions, a rational approach to medical therapy
could emerge.
Detection
Down syndrome can easily be detected before its symptoms appear, by
screening the mother for chromosomal defects. This is done by
amniocentesis. By looking at the karyotype researchers can identify Down
syndrome prenatally. There has been no discovery on how to detect a carrier
for Down syndrome.