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.

Question

Quizplus · Accepted Answer

While individuals with Down syndrome may have a shortened lifespan, death by age 25 is not a characteristic of the syndrome. Mental retardation, skeletal abnormalities, heart defects, and increased susceptibility to infection are all commonly associated with Down syndrome.

The Most Common Human Aneuploidy Is Trisomy 21,Down Syndrome