The diagram above represents a model of signal transduction pathways (I and II) in a cell that is targeted by two different hormones (H, and H.). The components of the signal transduction pathways are identified in
the figure legend. Each cellular molecule in both pathways can exist in an inactive or active form. When the
components in pathway I are sequentially activated, the TAP molecules promote cell division. When the
components in pathway II are sequentially activated, downstream signaling by the G protein is inhibited.
Based on the model, which of the following mutations is most likely to result in a cell that will generate a
cancerous tumor?

A: rachel carson :

They are all in a iving organism.

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. 

The answer is c water is the solvent and salt is the solvent