The engineers at Jurassic Park are experimenting with ways to control the dinosaurs. They have identified the enzymes of the methionine metabolic pathway and are investigating the effects of mutating them individually so no protein is made. By doing so, the dinosaurs will be dependent on supplements in their diet to survive. If HST is mutated, what metabolite will accumulate in the dinosaurs? a. cysteine b. cystathione c. homocysteine d. methionine