What can be inferred about the osmosis of water in potato cells? A. The cells stop gaining water by osmosis in the 0.2M solution, so the concentration of glucose in the potato cells must be greater than 0.2M.
B. The cells stop gaining water by osmosis in the 0.2M solution, so the concentration of glucose in the potato cells must be between 0.1M and 0.2M.
C. In the solutions where the cells lose water by osmosis, the original concentration of water in those cells must be less than the concentration of water in the solutions.
D. In the solutions where the cells gain water by osmosis, the original concentration of water in those cells must be greater than the concentration of water in the solutions.

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. 

Yes yes yes very good