If zack is guilty, and the mystery food sample contains protein, which test tube will the mystery food sample resemble?

This question is incomplete, but based on research, the mystery food sample will resemble the test tube used for testing for protein.
In order to identify proteins in food, Biuret reagent is usually used in the laboratory. When the Biuret reagent is added to a food that has protein, the color of the food will change to violet color or pink and this color change is usually used as an indication that protein is present in the food.

What are you tryna ask us

The answer would be c, white eyes are homozygous recessive. in the early 1900s, morgan conducted several experiments with vinegar  flies (drosophila). one  sample revealed an anomaly: a  white-eyed, single male fly. he attempted to breed this fly with the typical red-eyed females. the offspring were all red-eyed. using flies from this new generation (brother-sister pairs)  produced some red-eyed and a few white-eyed flies. the white-eyed were all male. in later experiments, he was able to produce white-eyed females. this proved that white eyes are not lethal to either sex (ruling out a and b). since the percentage of white eyes to red eyes is so low, white eyes are not a dominant trait. it would be a recessive trait.