Down Syndrome Report

        The chromosomal deviateity involved in most cases of win 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 ashes cells instead of the normal 46, although how this causes the conditions symptoms is non yet known. Scientists assume that the discernment for the abnormal chromosomal compartmentalisation is the fertilization of an egg cell having 24 chromosomes by a sperm with a normal medley of 23, but they have also found that the sperm bed carry the extra chromosome as well. The abnormal egg cell or sperm is derived from a germ cell in which the scoff of 21st chromosomes holds together and passes into the same sperm or ovum instead of separating. In the type of beat syndrome called translocation, the extra chromosome 21 material is attached to one of the other chromosomes; when some, but non all, of the bodys cells carry an extra chromosome 21, the conditio n is a type of get the hang syndrome called mosaicism.         Because of the extra chromosome 21, children with brush up syndrome often have some reference physical features, such(prenominal) as a small head, a immediately face, slightly upward slanted eyelids, skin folds at the sexual corners of the eyes, small nose and mouth, and small hands and feet.

some of these characteristic do not interfere with the childs functioning, a heal earlier uses the characteristics for diagnostic purposes. These physical features atomic number 18 variable, and children with Down syndrome ar usually more like other children than they are different.         In! dividuals with Down syndrome also often have certain aesculapian conditions such as weak muscles, neurological impairments, heart disease, intestinal abnormalities, under the weather functioning thyroid gland, eye abnormalities, interview problems, and skeletal problems. well-nigh all children with Down syndrome are mentally retarded, in the temperate to... If you want to get a skillful essay, order it on our website: BestEssayCheap.com

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