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killian killian
wrote...
Silver Member
Posts: 6024
9 years ago
A condition caused by the presence of an extra chromosome on the 21st pair and
characterized by intellectual developmental disorder and various physical anomalies is ______.
      a.   Down syndrome                  c.   fragile X syndrome
      b.   Klinefelter’s syndrome            d.   Turner’s syndrome
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Smiling Face with Open Mouth
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f_zah1f_zah1
wrote...
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Posts: 10774
9 years ago
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