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 21^st 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.