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Title: Ray has a chromosomal abnormality, caused by an extra chromosome on the 21st pair. This abnormality ... Post by: Dennya4 on Jan 21, 2018 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. Title: Ray has a chromosomal abnormality, caused by an extra chromosome on the 21st pair. This abnormality ... Post by: Shaniaanthony on Jan 21, 2018 Content hidden
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