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Home Q & A Board Other Fields Homework Help Sociology
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Dennya4 Dennya4
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6 years ago
Ray has a chromosomal abnormality, caused by an extra chromosome on the 21st pair. This
  abnormality has retarded Ray's mental growth and is called
 
  A) Down syndrome.
  B) Klinefelter's syndrome.
  C) XYY syndrome.
  D) FSH.
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ShaniaanthonyShaniaanthony
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6 years ago
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Dennya4 Author
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6 years ago
Brilliant ツ
homework1
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Yesterday
You make an excellent tutor!
acaruso
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2 hours ago
Just got PERFECT on my quiz
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