Enhancers are
A) adjacent to the gene that they regulate.
B) required to turn on gene expression when transcription factors are in short supply.
C) DNA sequences to which activator proteins bind.
D) required to facilitate the binding of DNA polymerases.

Question

Quizplus · Accepted Answer

Enhancers are specific DNA sequences that are recognized and bound by activator proteins, which then facilitate gene expression by regulating transcription.

Option A is not correct because enhancers may be located at some distance from the genes they regulate, rather than necessarily being close by.

Option B is false since enhancers are not directly involved in the regulation of transcription factors.

Option D is also incorrect because enhancers do not facilitate the binding of DNA polymerases, but rather enhance the expression of a gene through the recruitment of transcription factors.

Enhancers Are