| Down syndrome |
A disorder caused by the presence of an extra chromosome 21 and characterized by mental retardation and distinguishing physical features.
출처: www.stjude.org/glossary
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| Down syndrome |
A genetic disorder of varying degree that is due to the presence of an extra twenty-first chromosome or a piece of one, causes a range of physical and mental handicaps, and occurs in 1 out of 800 live births. Mothers over the age of 35 have an increased risk of conceiving a child with this disorder, because of their longer exposure to environmental substances. The presence of this abnormality can be detected through the genetic screening process amniocentesis in the fourth month of pregnancy.
출처: highered.mcgraw-hill.com/sites/0072322357/student_...
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| Down syndrome |
A genetically inherited condition caused by extra genetic material (genes) from the twenty-first chromosome and resulting in a combination of features including some degree of mental retardation or cognitive disability and other developmental delays.
출처: highered.mcgraw-hill.com/sites/0072486694/student_...
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| Down syndrome |
a genetic disorder in which a person's cells have 1 too many chromosomes, causing moderate to severe mental handicap and a characteristic appearance
출처: www.american-depot.com/services/resources_gl_d.asp
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| Down syndrome |
A common genetic disorder in which there is an extra copy of chromosome number 21 (trisomy 21), resulting in mental retardation and physical malformations.
출처: www.ehealthmd.com/library/amniocentesis/AMO_glossa...
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