Mark was diagnosed with a moderate intellectual disability and would be described as a loving and responsive child,who is making progress in a specially tailored educational program.Mark's condition is the result of his receiving an extra chromosome from his mother at pair 21.Mark has
A)cretinism.
B)fragile-X syndrome.
C)Down syndrome.
D)phenylketonuria (PKU).

Question

Quizplus · Accepted Answer

The extra chromosome at pair 21 is characteristic of Down syndrome, which is associated with intellectual disability. The other options are not related to this type of genetic condition.

Mark Was Diagnosed with a Moderate Intellectual Disability and Would