David was born a male with an extra X chromosome on the 23rd pair. As result, he has reduced masculine characteristics, enlarged breasts, and is obese and excessively tall. David is likely to be diagnosed with __________.
A) PKU
B) Down syndrome
C) Klinefelter syndrome
D) Turner syndrome

Question

Quizplus · Accepted Answer

Klinefelter syndrome is a genetic disorder caused by the presence of an extra X chromosome in males. This leads to reduced masculine characteristics, enlarged breasts, obesity, and excessive height. PKU (phenylketonuria) is a metabolic disorder, Down syndrome is caused by an extra chromosome 21, and Turner syndrome is caused by a missing or incomplete X chromosome in females. None of these conditions match David's symptoms.

David Was Born a Male with an Extra X Chromosome