Answer:
Step-by-step explanation:
(1) The defective enzyme, which was suppose to break down drugs, is an oxidoreductase. Since, enzymes that break down drugs or metabolic enzymes perform there functions by oxidizing the drugs.
(2) Both codes are triplet codes for the enzyme; however the normal triplet code ought to be ATT, however there was a point mutation causing the "A" to be "C". These letters represent the bases in the DNA, ATT is adenine-thymine-thymine while CTT is cytosine-thymine-thymine.
(3) Further medications Henry is prescribed could include been taken with a drug/enzyme that will breakdown the actual medication.