Which of the following genetic disorders can be classified as a sex-linked chromosomal abnormality?
A)Phenylketonuria
B)Sickle-cell anemia
C)Klinefelter syndrome
D)Down syndrome

Question

Quizplus · Accepted Answer

Klinefelter syndrome is caused by an extra X chromosome in males, making it a sex-linked chromosomal abnormality. Phenylketonuria and sickle-cell anemia are caused by mutations in single genes and are not sex-linked. Down syndrome is caused by an extra copy of chromosome 21, which is not a sex chromosome.

Which of the Following Genetic Disorders Can Be Classified as a Sex-Linked