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suter [353]
3 years ago
9

Imagine that you've discovered a eukaryotic regulatory sequence thousands of base pairs away from the promoter, and that when th

is sequence is lost due to mutation, levels of gene expression decrease sharply. This sequence is _____. Select one: a. a promoter b. a promoter-proximal element c. a silencer d. an enhancer
Biology
1 answer:
Goryan [66]3 years ago
8 0

Answer:

The correct answer is option d, that is, an enhancer.

Explanation:

An enhancer refers to a short sequence of DNA, that is, about 50 to 1500 base pairs in length, which performs an essential role in enhancing the transcription process of a specific gene. These enhancers are also termed as transcription factors.  

An enhancer is found within the gene's coding region and can be present downstream of a gene, upstream of a gene, or thousands of base pairs away from a promoter sequence. As its primary role is to increase the process of transcription, thus, if anyhow, an enhancer is lost because of a mutation, the expression of a gene may even decline at a brisk rate.  

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