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scZoUnD [109]
3 years ago
11

(problem 9) what is an insulator? a protein that blocks rna polymerase from interacting with a promoter a special type of histon

e that occurs at the boundaries of genes a transcriptional repressor protein that surrounds the telomeres and centromeres a sequence of dna that inhibits the action of enhancers in a position-dependent manner a segment of dna that forms supercoiled heterochromatin that is devoid of any dna-regulator binding
Biology
1 answer:
Nadusha1986 [10]3 years ago
4 0
There are two correct answers:
1. A sequence of DNA that inhibits the action of enhancers in a position-dependent manner. Those are enhancer-blocking insulators and when an insulator is located in between a promoter and an enhancer, it prevents the influence of the enhancer on the promoter.

<span>2. A segment of DNA that forms supercoiled heterochromatin that is devoid of any DNA-regulator binding. Those are barrier insulators and they prevent euchromatin (transcriptionally active region) from turning into heterochromatin (transcriptionally inactive).</span>
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Answer:

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4 years ago
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aleksandr82 [10.1K]
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b. the bottleneck effect.

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