The primary difference between an enhancer and a promoter-proximal element is that
A)enhancers are transcription factors,while promoter-proximal elements are DNA sequences.
B)enhancers enhance transcription,while promoter-proximal elements inhibit transcription.
C)enhancers are part of the promoter,while promoter-proximal elements are regulatory sequences distinct from the promoter.
D)enhancers are at considerable distances from the promoter and can be moved or inverted and still function,while promoter-proximal elements are close to the promoter and their position and orientation must be maintained.
E)enhancers are DNA sequences,while promoter-proximal elements are proteins that bind proximal to the promoter.

Question

Quizplus · Accepted Answer

The primary difference between enhancers and promoter-proximal elements is their distance from the promoter. Enhancers are located at considerable distances from the promoter and can still function when moved or inverted, while promoter-proximal elements are located close to the promoter, and their position and orientation must be maintained. The other choices are incorrect statements about enhancers and promoter-proximal elements.

The Primary Difference Between an Enhancer and a Promoter-Proximal Element