Down Syndrom

Down syndrome the reasons why it occurs how it impacts the family the behaviors life planning and its development throughout time
Down syndrome, or Downs syndrome (primarily in the United Kingdom),[1][2] trisomy 21, is a chromosomal condition caused by the presence of all or parcel of an extra 21st chromosome. It is named after John Langdon Down, the British doctor who described the syndrome in 1866. The condition was clinically described introductory in the 19th century by Jean Etienne Dominique Esquirol in 1838 and Edouard Seguin in 1844.[3] Down syndrome was identified as a chromosome 21 trisomy by Dr. Jérôme Lejeune in 1959. Down syndrome in a fetus can be identified through chorionic villus sampling or amniocentesis during pregnancy, or in a baby at birth.

Down syndrome is a chromosomal condition characterized by the presence of an extra copy of catching material on the 21st chromosome, either in substantial (trisomy 21) or part (such as due to translocations). The effects and end of the extra copy vary greatly among people, depending on catching history, and pure chance. The incidence of Down syndrome is estimated at 1 per 733 births, although it is statistically more common with older parents (both m another(prenominal)s and fathers) due to increased mutagenic exposures upon some older parents reproductive cells.



Other factors may besides play a role. Down syndrome occurs in all gracious populations, and analogous effects assume been found in other species such as chimpanzees[4] and mice.

Often Down syndrome is associated with some hindrance of cognitive ability and physical growth, and a particular personate of facial characteristics. Individuals with Down syndrome tend to have a lower-than-average cognitive ability, often ranging from mild to moderate disabilities. Many children with Down syndrome who have received family support, enrichment therapies, and tutoring have been known to graduate from high drill and college, and enjoy employment in the work force. The average IQ of...If you want to get a full essay, order it on our website: Orderessay



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