Amy gets a new kitten. while they are playing, the kitten scratches amy. after a week, some of the scratches on amy’s arm blister and she develops a fever and swollen lymph nodes. which mode of disease transmission could transmit cat-scratch disease from the kitten to amy? a. oral b. aerosol c. vector fomite d. direct contact

No 1 very mooch

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.