Which abnormality of the sex chromosomes is associated with mild-to-severe intellectual disability, particularly when the defective gene is inherited from the mother?

Question

Quizplus · Accepted Answer

Fragile-X syndrome is associated with mild-to-severe intellectual disability, and the condition is particularly more severe when the defective gene is inherited from the mother. This is because it is linked to mutations in the FMR1 gene on the X chromosome.

Which Abnormality of the Sex Chromosomes Is Associated with Mild-To-Severe