Fragile X syndrome is
A)expressed only when it is passed from father to child.
B)the most common inherited cause of mental retardation.
C)expressed when it is passed from either parent to child.
D)linked to more than half of the cases of autism.

Question

Quizplus · Accepted Answer

Fragile X syndrome is the most common inherited cause of mental retardation. It is caused by a mutation in the FMR1 gene and can be passed from either parent to child. It is not linked to autism in more than half of the cases.

Fragile X Syndrome Is