If an animal cell suddenly lost the ability to produce GTP, what might happen to its signaling system?

It would be able to carry out reception and transduction but would not be able to respond to a signal.

It would use ATP instead of GTP to activate and inactivate the G protein on the cytoplasmic side of the plasma membrane.

It would employ a transduction pathway directly from an external messenger.

It would not be able to activate and inactivate the G protein on the cytoplasmic side of the plasma membrane.

Dthrough a slow process

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.