Transcription activators are different from transcription factors in that a. transcription activators are required for rna polymerase binding, while transcription factors slow rna polymerase binding. b. transcription factors prevent rna polymerase binding, while transcription activators assist rna polymerase binding. c. transcription factors are required for rna polymerase binding, while transcription activators accelerate transcription. d. transcription activators accelerate transcription, while transcription factors assist rna polymerase binding.

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. 

Ican not answer this question since it does not have enough information