Down's Syndrome: Difference between revisions
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Down's Syndrome is a genetic disorder caused by [[ | Down's Syndrome is a genetic disorder caused by [[Trisomy|trisomy]] in [[Chromosome 21|chromosome 21]], which is in turn a result of [[Post-miotic nondisjunction|post-miotic nondisjunction]] occuring. Trisomy 21 is a rare conditon, occuring in one in six hundred children. However, this is more likely to decrease once a mother is over forty. A charcteristic of a child with this disease is mental retardation, a flattened nose, a long toungue and small hands and feet. These children also tend to have a shorter life span<ref>Kevin T.Patton, Gary A.Thibodeau (2010) Anatomy & Physiology, 19th edition, US: Mosby, Inc.., an affiliate of Elsevier Inc. Chapter 6, page 1120.</ref>. | ||
=== References === | |||
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Revision as of 21:12, 20 October 2013
Down's Syndrome is a genetic disorder caused by trisomy in chromosome 21, which is in turn a result of post-miotic nondisjunction occuring. Trisomy 21 is a rare conditon, occuring in one in six hundred children. However, this is more likely to decrease once a mother is over forty. A charcteristic of a child with this disease is mental retardation, a flattened nose, a long toungue and small hands and feet. These children also tend to have a shorter life span[1].
References
- ↑ Kevin T.Patton, Gary A.Thibodeau (2010) Anatomy & Physiology, 19th edition, US: Mosby, Inc.., an affiliate of Elsevier Inc. Chapter 6, page 1120.