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The Most Common Human Aneuploidy Is Trisomy 21,Down Syndrome

Question 12

Multiple Choice

The most common human aneuploidy is trisomy 21,Down syndrome.All of the effects listed below may be seen in this syndrome except

A) death always by age 25.
B) mental retardation.
C) skeletal abnormalities.
D) heart defects.
E) increased susceptibility to infection.

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