Both _____ are genetic disorders caused by the presence of an extra chromosome.
A) Down syndrome and Turner syndrome
B) Turner syndrome and sickle-cell anemia
C) Klinefelter syndrome and Down syndrome
D) Phenylketonuria (PKU) and XYY syndrome

Question

Quizplus · Accepted Answer

Down syndrome is caused by an extra copy of chromosome 21 (trisomy 21), and Klinefelter syndrome is caused by an extra X chromosome in males (XXY). Both are genetic disorders resulting from the presence of an extra chromosome.

Both _____ Are Genetic Disorders Caused by the Presence of an Extra