Which of the following chromosomal disorders does not involve abnormal sex chromosomes?
A) Turner's syndrome
B) XXX syndrome
C) Down syndrome
D) Klinefelter's syndrome

Question

Which of the following chromosomal disorders does not involve abnormal sex chromosomes?
A) Turner's syndrome
B) XXX syndrome
C) Down syndrome
D) Klinefelter's syndrome

Quizplus · Accepted Answer

Down syndrome is caused by an extra copy of chromosome 21, which is not a sex chromosome. Turner's syndrome is caused by a missing or partially missing X chromosome and Klinefelter's syndrome is caused by an extra X chromosome in males. XXX syndrome is caused by an extra X chromosome in females.

Which of the Following Chromosomal Disorders Does Not Involve Abnormal