Antonio has a sex chromosome abnormality.He is taller than most of his friends and his body proportions are slightly feminized.He scored within the normal range on a recent intelligence test,although his score for the verbal scale was lower than average.Based on this description,which syndrome does Antonio have?

Question

Quizplus · Accepted Answer

Antonio's height and feminized body proportions suggest he has Klinefelter's syndrome, which is caused by an extra X chromosome (XXY). The lower score on the verbal scale of the intelligence test is also consistent with this syndrome. Turner's syndrome (A) is caused by a missing or partially missing X chromosome (XO), while fragile-X (B) is a genetic disorder that can cause intellectual disability and behavioral challenges, but does not typically affect height or body proportions. Supermale (D) is a rare genetic condition in which a male has an extra Y chromosome (XYY), but it is not associated with feminization or other physical characteristics described for Antonio.

Antonio Has a Sex Chromosome Abnormality