Which of the following genetic disorders affects only males?
A)phenylketonuria
B)sickle-cell anemia
C)Klinefelter syndrome
D)Down syndrome

Question

Quizplus · Accepted Answer

Klinefelter syndrome is a genetic disorder in which males have an extra X chromosome, resulting in XXY instead of XY. This disorder only affects males. Phenylketonuria and sickle-cell anemia can affect both males and females, while Down syndrome is caused by an extra chromosome 21 and can occur in both males and females.

Which of the Following Genetic Disorders Affects Only Males