Down Syndrome 4
Beginning of paper
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
....
Middle of paper
.... researchers, and the term was dropped from
scientific use. Instead, the condition became "Down's syndrome." In the
1970s, an American revision of scientific terms changed it simply to "Down
syndrome," while it still is called "Down's" in Europe.
In the first part of the twentieth century, there was much speculation of
the cause of Down syndrome. The first people to speculate that it might be
due to chromosomal abnormalities were Waardenberg and Bleyer in the
1930s. But it wasn't until ....
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Word count: 1135
Page count: 5 (approximately 250 words per page)
