Eukaryotic promoters and enhancers: Which correctly states the relation between them?
a. An enhancer can function in the absence of a promoter.
b. Eukaryotic RNA polymerase can bind to promoters unassisted; it need help to identify and bind to enhance
c. A promoter can function in the absence of an enhancer.
d. A promoter is a cis - acting element; an enhancer is a trans - acting element.