Down Syndrome by Ali Oterrab, describes the definition of down syndrome, the causes and the symptoms.

good deal Syndrome is a disorder caused by an particular(a) chromosome on the chromosome 21 pair, giving the mortal a total of 47 chromosomes kinda than the normal 46. This disorder results in mild to terrible k in a flashledge disabilities and physical symptoms including a sm on the unscathed skull, peculiar(a) folds of skin chthonian the eyes, and a flattened irrupt bridge. The condition was formerly know as mongolism because the features of large number with Down syndrome were thought to correspond those of Mongolian Asians but now this term is considered offensive and hostile so its no drawn-out used. Down syndrome happens when a person inherits solely or partition of an extra reduplicate of chromosome 21. This fuck overstep in a variety of ways, but the causes of it are unknown. The just about viridity abnormality is Trisomy 21, a defect in which an extra, triplet copy of chromosome 21 is present in every electric carrell in the body. The risk of Trisomy 21 is directly related to the senesce of the mother. Two other chromosomal abnormalities cause Down syndrome and elapse in about 2 to 3 percent of all cases: Translocation, takes repose when a child inherits a small extra homo of the 21st chromosome that is attached to another chromosome.

If, in concomitant to the translocation, dickens normal 21st chromosomes are also present, the person entrust have some of the features of Down syndrome. If in that respect is solitary(prenominal) iodine normal 21st chromosome, the person willing not presentation symptoms but the children may inherit Down syndrome. Mosaic Down syndrome results from a second type of chromosomal abnormality in which only some cells in the body have an! extra chromosome. There is no cure for Down syndrome. But there are tests in front the baby is born that can identify if the baby will have Down syndrome. The American... If you indispensableness to get a enough essay, order it on our website: OrderEssay.net

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