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GENETICS: pull pile Syndrome A Natural lore 1 Research Requirement Presented to Dr. Sharon R. Lao University of Mindanao Matina, Davao City In Partial Fulfillment of the Requirement in NS 1 first gear Semester, 2nd Term S.Y. 2012-2013 Stephen S. Bermudez October 2012 mastered Syndrome Why must a child suffer from down syndrome? Annotated Bibliography Authors From Book Thomas D. Pollard(2004). carrel biota: Elsivier Science(USA), Inc. Meiotic errors involving a few of the autosomes can give rise fetuses that blend in to birth. Individuals trisomic for chromosome 21( a ondition commonly known as DOWN SYNDROME) devote genial retardation and characteristic phenotypic features. Campbell(2002). biota: Pearson Eduation, In. San Francisco, CA Down Syndrome, affects approximately one bug out of every 700 children born in the United States. Down syndrome is ordinarily the result of an extra chromosome 21, so that each body prison cell has a total of 47 chromosome. Ana Mader(2010). Essentials of Biology: M Graw Hill, NY Down syndrome occurs when the egg or the sperm has an extra hromosome 21 payable to nondisjunction in either myosis I or myosis ll. Characteristic include a dewy-eyed rounded face and narrow, slanting eyelids. Mental disabilities be often present, but many a(prenominal) vary greatly.

Sylvia S. Mader(2006). Human Biology: Mc Graw Hill, Boston The roughly common autosomal trisomy seen among humans is down syndrome, also called trisomy 21. This syndrome is easily recognized by these characteristics: short height; an eyelid shut up; a flat fac e; stubby fingers, a wide gap between the fi! rst and moment toes; a enceinte fissured tongue; a round stop; a laurel crease, the so-called simian line; and unfortunately, mental retardation, which can sometimes be severe. Gerald Karp(2012). Cell Biology: washstand Wiley& Sons, Inc. Eventhough chromosome 21 is the smallest human chromosome with fewer than 400 genes, the carriage of an extra copy of this genetic material leads to Down Syndrome....If you exigency to get a full essay, order it on our website: OrderCustomPaper.com

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