PKU, Tay-Sachs disease, and galactosemia have in common the fact that they are all
A) accompanied by sudden decreases in IQ during adolescence.
B) forms of mental retardation produced by poor maternal diet during pregnancy.
C) genetically-based disorders accompanied by low intelligence.
D) the results of hormonal deficiencies prenatally or during infancy.

Question

Quizplus · Accepted Answer

PKU (Phenylketonuria), Tay-Sachs disease, and galactosemia are all genetically inherited disorders. They can lead to intellectual disabilities among other symptoms if not managed or treated properly. None of the conditions are directly caused by maternal diet, sudden IQ decreases in adolescence, or hormonal deficiencies alone.

PKU, Tay-Sachs Disease, and Galactosemia Have in Common the Fact