(Solved): PKU, is a conditional mutation in humans, what is/are the main cause/s of the disease? lack of a fun ...

PKU, is a conditional mutation in humans, what is/are the main cause/s of the disease? lack of a functioning phenylalanine hydroxylase None of these answers are correct 2 of these answers are correct lack of a functioning L-tyrosine reductase exposure to environmental phenylalanine