Whenever I see the word artichokes I feel nauseous and scratchy. I once ordered a pizza with artichokes and cheese on it. I have never been allergic to artichokes before. Soon after I began to feel itchy and suddenly saw bumps appearing on my midsection and arms. I called the doctor and talked to his nurse. She asked me if they were square or circular. I said they were square. She said I had hives and to take benedryl. - the sight of artichokes - feeling nauseous and scratchy from the allergic reaction - allergic reaction (hives) - feeling nauseous and scratchy from seeing an the word "artichokes" A. What is the CS? B. What is the UCS? C. What is the CR? D. What is the UCR?

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. 

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