Harry Is an Autistic Child and Has a Short Attention

Multiple Choice

Harry is an autistic child and has a short attention span for any task. His intellectual abilities are much lower than other children his age. His pediatrician reveals that Harry has a genetic disorder due to an abnormality in his X chromosome, which has become constricted. Harry most likely suffers from

A) Turner syndrome.
B) Fragile X syndrome.
C) XYY syndrome.
D) Klinefelter syndrome.