Down syndrome 2

downward(a) syndrome is one of the most frequently occurring birth defects in the world. It is a chromosomal abnormality which results in 47 chromo close tos, sort of of 46, with an particular(a) chromo somewhat being 21. Be find the majority of elaborate syndrome cases make believe the 21st chromosome, it is normally called trisomy 21.         Down syndrome is usually caused by a cubicle divider error, which is known as non-disjunction. This occurs when an embryo develops with three reduce 21 chromosomes instead of cardinal. This excess genetic visible alters the cable of maturement and causes the characteristics of this syndrome. The cause of this faulty cell division is clam up unknown, although at that place seems to be some relatedness to agnatic age. thither are ii other types of Down syndrome, mosaicism and translocation, but these do not affect individuals as frequently as non-disjunction.         Mosaicism is a mixture of two cell types, leaving the individual with some normal chromosomes of 46, and some affected ones with 47. Translocation occurs when part of the twenty-first chromosome breaks finish up and attaches to another cell. The number number of chromosomes is 46, however the excess material from the twenty-first chromosome results in the affects of the syndrome. With translocation, most cases occur sporadically, with no strength on maternal age. These two types of this syndrome are very rare, being responsible for completely 6 or 7 per centum of all cases.         Children with Down syndrome are at high essay of exposure for health problems. These admit congenital heart defects, respiratory problems, increase suseptibility to infections, and/or block digestive tracts. Leukemia has a greater relative frequency of appearance among children with Down syndrome, and adults are at an increased risk for Alzheimers disease. Advances in practice of medicine shoot hel ped these individuals with their health prob! lems, and in general people with Down syndrome have a life foreboding of 55 years.         The moral ripening of people with Down syndrome is challenged by dint of some degree of mental clumsiness. Typically, the level of mental retardation falls into the mild to take for range, but some cause can... If you want to get a full essay, order it on our website: OrderEssay.net

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