What kind of relationship would a mouse and a rabbit have?
a. competitive relationship
b. communalistic relationship
c. mutuality relationship
d. parasitic relationship

This is a fairly simple question that you can answer with the process of elimination.
A competitive relationship is a relationship between members of the same or different species in which individuals are adversely affected by those having the same living requirements, such as food or space.
A commensalistic relationship is a relationship between two different species where one species enjoys a benefit and the other isn't significantly affected.  
A mutalistic relationship is a relationship between two different species where both species receive a benefit from the other.
A parasitic relationship is a relationship between two different species where the parasite (symbiont) benefits from the host and the host is harmed.
Hope this helps!

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.