Males born with Klinefelter syndrome develop normally until adolescence when they do not acquire facial hair, their sex organs fail to mature, and their voices remain unchanged. These characteristics are due to having a(n):

Question

Quizplus · Accepted Answer

Klinefelter syndrome is caused by the presence of an extra X chromosome in males, resulting in the XXY karyotype. This leads to the symptoms described, such as underdeveloped sex organs and lack of secondary sexual characteristics.

Males Born with Klinefelter Syndrome Develop Normally Until Adolescence When