Most cases by far of Down syndrome are caused by the presence of three, instead of two, copies of chromosome 21.
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Q15: Research has proven that children with intellectual
Q16: Biological or organic risk is more strongly
Q17: The Kallikak family study conducted by Goddard
Q18: Research indicates that the IQ scores of
Q19: Parenting is not a strong predictor of
Q21: Research by Bailey et al., (2009)found that
Q22: Individuals with Williams syndrome tend to have
Q23: Williams syndrome is associated with musical aptitude
Q24: Prader-Willi syndrome is the most common cause
Q25: Reconstructive facial surgery for children with Down
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