試題詳解

35. He then carried out the experiments, and found that X is interacting with a DNA sequence upstream of translational start site of Y gene. The transcription of Y gene is dependent on the presence of X, and he listed out a few hypotheses. Which one is the LEAST likely to be true?
(A) X can epigenetically modify DNA sequence
(B) X can interact with PCNA
(C) X can interact with RNA polymerase
(D) X can unwind DNA double helix
(E) X can interact with activator sequence