You have identified a mutation in a gene that seems to decrease transcription of another gene 2000 bp away from the mutation site. What regulatory sequence, which may be found within another gene, has likely been mutated in this instance?
A) core promoter
B) enhancer sequence
C) homeodomain motif
D) proximal elements
E) upstream activator sequence

Question

Quizplus · Accepted Answer

Enhancer sequences can act at a distance, often thousands of base pairs away, to increase the transcription of a gene. The mutation described likely affects an enhancer sequence, given its impact on transcription of a gene 2000 bp away.

You Have Identified a Mutation in a Gene That Seems