Which of the following genetic disorders is caused by the presence of an extra chromosome 21 and is characterized by intellectual disability and distinctive physical features? A) Down syndrome B) Turner syndrome C) Klinefelter syndrome D) Huntington's disease
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The question asks us to identify a genetic disorder that is characterized by two main features: intellectual disability and distinctive physical features. It specifically mentions that this disorder is caused by the presence of an extra chromosome 21. Show more…
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