Two-year-old Zack has an inherited disorder in which his body cannot break down fat.He will probably die by the time he is four.Which of the following diseases is Zack most likely suffering from?
A) Phenylketonuria
B) Sickle-cell anemia
C) Tay-Sachs disease
D) Down syndrome

Question

Quizplus · Accepted Answer

Zack is most likely suffering from Tay-Sachs disease, which is an inherited disorder that affects the breakdown of lipids in the brain and nervous system. This disease usually leads to death by the age of four, as Zack's case suggests. Phenylketonuria and sickle-cell anemia are also inherited disorders, but they do not directly involve the breakdown of fat. Down syndrome is a genetic disorder caused by an extra chromosome, and it does not typically lead to early death.

Two-Year-Old Zack Has an Inherited Disorder in Which His Body