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Created with Fabric.js 1.4.5 Sympto ms Cause s decrease d/poorm uscleton e short neck flattene dprofile and nose small head, ears, and mouth upward slanted eyes white spots on iris wide, short hands and fingers Treatme nt Down Syndrome short attention span poor judgement impulsive behavior slow learning delayed language and speech development physical, speech/language, occupational, and emotional/behavioral therapies amino acid supplements for the brain (not well controlled and has possible side effects) specialized "Early Intervention" programs and resources provided by professionals (for young children) 90% extra copy of chromosome 21 from mother 4% extra copy of chromosome 21 from father remaining is error after fertilization (when embryo grows) prenatal screening test - shows prediction prenatal diagnostic test - gives definite diagnostic blood test during trimester 1 or 2 of pregnancy, plus an ultrasound in trimester 1 (tests can be combined or alone) removing a sample of genetic material to test for extra chromosome 21 (types are: Amniocentesis, Chorionic Villus, or Percutaneous) Diagno sis TYPES OF DOWN SYNDROME: trisomy 21 - type of Down Syndrome where there are 47 instead of 46 chromosomes (3 copies of chromosome 21, and it is 95% of cases) translocation - when part of a chromosome 21 breaks off during cell division and attaches itself to a different chromosome pair (still 46 chromosomes, 4% of cases) mosaic - some of the cells have 3 chromosome 21 copies, but others still have the normal number of chromosomes (rarest and least severe, 1% of cases) 6,000 people born with Down Syndrome in U.S. most frequent chromosomal disorder from mild to moderate brain disability 40,000 people with Down Syndrome in the U.S. Extra Facts!
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