Down syndrome

eat Syndrome, a chromo virtually abnormality is present in wholly ethnicity, affable economic classes, and g terminateer which is defined as a subjective disorder by an extra chromosome on the chromosome 21 pair. Although in that respect are many theories that book been develop for the cause of chromosome abnormalities, it is in quantify not known what really causes Down syndrome. Down syndrome was observe and named after a British physician called John Langdon Haydon Down who first studied it in 1866. At first it was called mongolism because Down syndrome people have some physical features that come out like Mongolian. The impact individuals have upward slanting eyes, a quite a little of scrape up that starts at the inner corner of individually eye. A ample crease across the sole of all(prenominal) palm and foot, one sort of of two horizo ntal furrows on their fifth fingers, slightly flattened facial features. Their noses tend to be small, the ears are a dispense small and the upper part of the ear may fold over. They also have short enormous necks and hands with shorter fingers. some(a) Down babies feet appear to have a wide break of serve between the first and second toe. The affected person is unremarkably small, 145-160 cm for adults. Birth weight is usually 10-20 % below normal. rational retardation (100 %) becomes evident at the end of first yr of life.

The erudition quotient in adults is most often below 50, althou gh some are believed to have moderate intell! igence with normal IQ. Usually, the electric shaver is happy, affable, and affectionate; though walking; speech communication and mess training delayed until 2 to 3 long time of age. They may have delayed puberty and early menopause. tied(p) so the affected women can still have children scarce for the most part the men cannot. In Human development, our cells unremarkably have 46 chromosomes and divide in two ways. The first... If you wish to get a full essay, order it on our website: OrderEssay.net

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