Osmosis Jones questions

not the best question format lol but what i think might as scale color is controlled by a single gene with two alleles, the green allele and the yellow allele. when moths that are homozygous for green scales are mated with moths that are homozygous for yellow scales, 100% of the offspring have green scales.

where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?