Complete the given statement. An individual affected with phenylketonuria lacks an enzyme that converts the amino acid__i__ into __ii__.

i- tyrosine ii- phenylalanine i- phenylalanine ii- tyrosine i- homogentisic acid ii- tyrosine i- homogentisic acid ii- phenylalanine

i- phenylalanine ii- tyrosine

An individual affected with phenylketonuria lacks an enzyme that converts the amino acid phenylalanine into tyrosine.