In ________ syndrome,the 21ˢᵗ pair of chromosomes contains an extra chromosome resulting in symptoms such as large,round eyes,larger tongue,and developmental delay.
A)PKU
B)Down
C)Klinefelter's
D)Turner's

Question

Quizplus · Accepted Answer

The description matches the symptoms of Down syndrome, which is caused by an extra copy of chromosome 21. PKU is caused by an enzyme deficiency, Klinefelter's syndrome involves extra X chromosomes in males, and Turner's syndrome involves missing X chromosomes in females.

In ________ Syndrome,the 21ˢᵗ Pair of Chromosomes Contains an Extra