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 a sex chromosome abnormality, where males have an extra X chromosome (XXY) instead of the usual XY. This means it is a sex-linked chromosomal abnormality. Phenylketonuria, sickle-cell anemia, and Down syndrome are all caused by mutations in regular chromosomes and are not sex-linked.

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