A boy begins speaking somewhat later than average and also enters puberty late. As he matures to adulthood, he is very tall, and has very little body hair and smaller than average testicles. He is unable to have children. A chromosome test would most likely show this young man to have which sex chromosome complement?

Question

Quizplus · Accepted Answer

The symptoms described are characteristic of Klinefelter syndrome, which is caused by the presence of an extra X chromosome, resulting in the XXY chromosome complement.

A Boy Begins Speaking Somewhat Later Than Average and Also