A male has a defect in the X chromosome of the 23rd pair. As children, people with this syndrome, known as __________, experience symptoms that can range from mild to severe or even profound intellectual disability.
A) fragile X syndrome
B) Down syndrome
C) fetal alcohol syndrome
D) familial intellectual disability

Question

Quizplus · Accepted Answer

Fragile X syndrome is caused by a defect in the X chromosome of the 23rd pair. It is the most commonly inherited cause of intellectual disability and affects males more severely than females. Symptoms can range from mild to severe or even profound intellectual disability.

A Male Has a Defect in the X Chromosome of the 23rd