If assuming PTC as a simple gene trait, what other genotype would you select to put in this missing genotype box that could result in this phenotype? Why?

they vary. it used to be meat, grain, bread, candy, beverages, donuts, and fruits/vegetables. now they added exercise in.

the cold front replaces the warmer air at the ground level changing the wind to be breezy and denser.there is also an immediate drop in the temperature.