The scientist studies a dragon fly species. She started with two parent dragonflies and has raised many generations. All have had 4 wings. In the most recent generation of dragonfly offspring, one dragonfly had eight wings. What do you think caused this change? Identify if the changes helpful, harmful, or mutual and provide an explanation for your choice.

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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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