Ray Has a Chromosomal Abnormality, Caused by an Extra Chromosome

question 34

Multiple Choice

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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