Which of the following genetic disease results from a deficiency in the liver enzyme that converts phenylalanine to tyrosine?

Phenylketonuria (PKU) is an inherited disorder of amino acid metabolism in which the affected individual lacks enzymes to metabolize phenylalanine. Albinism is a condition that results in a defect in tyrosine metabolism and the inability to produce melanin. Porphyria is an inherited disorder involving defects in heme synthesis. Homocystinuria is a disorder in the metabolism of homocysteine, resulting in high levels of homocysteine and methionine in plasma and urine.