Question

A student is studying the following model of DNA.

A strand of DNA that has exons and introns. The exons are labeled as coding regions. The introns are labeled as non-coding regions.

The student learns that some of the non-coding regions have a high concentration of repressors bound to them.

Which question should the student ask to further understand the role of these non-coding regions in gene regulation?

(1 point)
Responses

Do these non-coding regions affect the structure of the DNA double helix?
Do these non-coding regions affect the structure of the DNA double helix?

How are these non-coding regions transcribed into mRNA
How are these non-coding regions transcribed into mRNA

What are the sequences of these non-coding regions, and how do they compare to known repressors?
What are the sequences of these non-coding regions, and how do they compare to known repressors?

How do these non-coding regions interact with DNA polymerase during replication?

Answer 1

What are the sequences of these non-coding regions, and how do they compare to known repressors?

Reason: repressors bind specific DNA motifs. Comparing the noncoding sequences to known repressor binding sites (consensus motifs) will identify whether these regions are regulatory elements (silencers/operators) and suggest how they control transcription. The other options ask about DNA structure, replication, or transcription of introns, which are less directly informative for repressor-mediated gene regulation.