Perry Was Born with Phenylketonuria (PKU) Which Means That

Multiple Choice

Perry was born with phenylketonuria (PKU) which means that

A) she is mentally retarded and has an extra 21st chromosome.
B) phenylalanine can accumulate and poison her nervous system.
C) she will develop normally until middle adulthood, at which time her nervous system will begin to deteriorate.
D) she has a missing chromosome and will be severely retarded.