Down Syndrome Report

        The chromosomal abnormality involved in most cases of checkmate 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 carcass 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 assortment of 23, but they have also found that the sperm fanny carry the extra chromosome as well. The abnormal ovum or sperm is derived from a germ cell in which the fit 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 not all, of the bodys cells carry an extra chromosome 21, the condition is a type of mastered syndrome called mosaicism.

        Because of the extra chromosome 21, children with Down syndrome often have some lineament physical features, such(prenominal) as a small head, a flat face, slightly upward slanted eyelids, skin folds at the inner 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 primarily uses the characteristics for diagnostic purposes. These physical features atomic number 18 variable, and children with Down syndrome are usually more like other children than they are different.

        Individuals with Down syndrome also often have certain medical conditions such as weak muscles, neurological impairments, heart disease, intestinal abnormalities, under the weather functioning thyroid gland, eye abnormalities, hearing problems, and skeletal problems. well-nigh all children with Down syndrome are mentally retarded, in the temperate to...

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