Which of the following statements regarding the chemical mediators of inflammatory responses is not true? a. they may be secreted by cells residing in the area of injury. b. they may be secreted by cells that enter the affected area. c. they may be generated by enzymatic cleavage of proteins in plasma. d. they are all peptides. e. they may be chemotaxins.

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.