Down Syndrome 2
Beginning of paper
Down syndrome is one of the most frequently occurring
birth defects in the world. It is a chromosomal abnormality
which results in 47 chromosomes, instead of 46, with an extra
chromosome being 21. Because the majority of Down syndrome
cases affect the twenty-first chromosome, it is commonly calle ....
Middle of paper
....
affected ones with 47. Translocation occurs when part of the
twenty-first chromosome breaks off and attaches to another
cell. The total number of chromosomes is 46, however the
excess material from the twenty-first chromosome results in the
affects of the syndrome. With translocation, most cases occur
sporadically, with no bearing on maternal age. These two types
of this syndrome are very rare, being responsible for only 6 or
7 percent of all cases.
Children with Down syndrome ....
------------------
Word count: 474
Page count: 2 (approximately 250 words per page)
