You have isolated some bacteria from your skin. In a Gram stain, the cells appear as purple cocci, many in grape-like clusters. The organism is positive for the catalase test, but negative for the coagulase test. On a Mannitol Salt Agar plate, the organism grows poorly and fails to turn the plate yellow. Finally, a novobiocin sensitivity test on blood agar showed the organism to be sensitive. A likely suspect is .

Ithink option a is correct because you cannot donate a different blood group than yours because it won't match.option a says betsy can donate to mark. they have the same blood group so donation can happen.

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.