申論題

36. Enhancers are usually quite a distance away from promoters. Which of the following best explains the interaction of such enhancers with promoters? (A) The enhancer is brought closer by sliding. (B) Promoter and enhancer region are brought closer by DNA looping. (C) Promoter and enhancer regions are bought together by the complete removal of supercoils. (D) The enhancer is brought closer by sliding and promoter and enhancer region are brought closer by DNA looping are correct.