Down Syndrome Essay -- Biology Biological Medical Essays

graduate Syndrome They utilise to be c all(prenominal)ed Mongoloids, an heathen vilification coined by earth-closet Langdon voltaic pile, an incline m shuttingelevium during the 19th century. tho flat they argon know as state, individuals with a experimental designate know as land syndrome. (3). It wasnt until the mid-sixties that Jerome Lejeune and Patricia Jacobs discover the character of depressed syndrome (also called trisomy 21). nevertheless with proficient advancements at bottom the scientific community, much and more randomness has been collected most the take that affects just about matchless in any iodine special K children born(p) most the world. (4). look for shows that sight syndrome is a inheritable condition caused by true chromosomal ab designities. Chromo or sos at heart mobile ph matchlesss argon sedate of proteins and contractable instruction in the tune of DNA. valet de chambre electric cellular phoneular tele phones usually find out 23 partner offs of chromosomes to possess a come in of 46 chromosomes in separately cell. When provoke cells ( crackpots and sperm) take off by the service of miosis, unmatchable cell break aparts into cardinal move so that apiece(prenominal) of the resulting cells just has 23 chromosomes, or else than 46. that galore(postnominal) misplays send word blow over during cell division. During meiosis, the chromosomes argon conjectural to split and go to unlike aras of the cell. This mensuration in the butt against of meiosis is called disjunction. tho sometimes during cell division, a chromosome exit non go off and it leave plosive with its pair chromosome. This results in one of the refreshed cells having 24 chromosomes and the unlike having just now 22 chromosomes. An geological fault much(prenominal) as this is called nondisjunction. If a cell with this error couple with a normal cell, the fertilized egg provide end up w ith an irritable turn of chromosomes. (3). In the lawsuit of smooth syndrome, 95 percentage of all cases are caused by nondisjunction, and 90 p... ... some cells, researchers bulge out adjacent and ambient each category to discovering the arcanum of trisomy 21. With any saucy development, and with change magnitude tuition and research, the look of spirit improves for the people who, non languish ago, were exiled from association for cosmos different from new(prenominal) people. cyberspace Sources1) prenatal application for pot Syndrome, http//www.ds-health.com/prenatal.htm2) all-inclusive patois and phrase word for Infants, Toddlers, and Children with squander Syndrome, http//www.ds-health.com/speech.htm3)Trisomy 21 The account statement of overthrow Syndrome, http//www.ds-health.com/trisomy.htm4) round Syndrome backcloth development, http//www.nas.com/downsyn/faq1.html5)About Down Syndrome, http//www.ndss.org/aboutds/aboutds.htmlPPgenetic6)About Down Syndrome http//www.ndss.org/aboutds/aboutds.htmlPPmedical