Down Syndrome Report

        The chromosomal antidromicity affect in most cases of worst syndrome is trisomy-21, or the presence of tierce copies of the 21st chromosome. As a result, the affected person has 47 chromosomes in each ashes cells instead of the normal 46, although how this causes the arrests symptoms is non more(prenominal)over known. Scientists assume that the discernment for the abnormal chromosomal compartmentalisation is the fertilisation of an egg cell having 24 chromosomes by a sperm cell with a normal mix of 23, but they have besides found that the sperm nooky carry the extra chromosome as well. The abnormal ovum or sperm is derived from a seeded player cell in which the give-up the ghost of 21st chromosomes holds together and passes into the homogeneous sperm or ovum instead of separating. In the case of beat syndrome called translocation, the extra chromosome 21 material is attached to unity of the other chromosomes; when some, but not all, of the bodys cells carry an extra chromosome 21, the condition is a type of get the hang syndrome called mosaicism.         Because of the extra chromosome 21, children with gloomy syndrome frequentlytimes have some type physical features, such(prenominal) as a tenuous head, a instantly face, slightly upward sloping eyelids, skin folds at the familiar corners of the eyes, small nose and mouth, and small hands and feet.

some of these peculiarity do not mediate with the childs functioning, a heal mainly uses the characteristics for diagnostic purposes. These physical features atomic number 18 variable, and children with Down syndrome atomic number 18 usually more like other children than they are different.         Individuals with Down syndrome also often have certain medical checkup conditions such as wishy-washy muscles, neurological impairments, heart disease, enteric abnormalities, under the weather functioning thyroid gland, eye abnormalities, hear problems, and skeletal problems. well-nigh all children with Down syndrome are mentally retarded, in the temperate to... If you penury to get a honorable essay, order it on our website: Ordercustompaper.com

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