Question

Which are the ways transcriptional repressors may function in eukaryotes? (Check all that apply)

__. Recruit co-repressors that prevent the RNA Pol II complex from binding the promoter

__. Sequester activators outside of the nucleus

__. Recruit co-repressors that cause heterochromatin formation

__. Competition with an activator for binding to an enhancer

Answer 1

Correct choices are

Recruit co-repressors that cause heterochromatin formation.

Competition with an activator for binding to an enhancer.

Explanation: Repression of the gene is done by,

• Converting the DNA into tightly packed Heterochromatin and make them transcriptionally inactive.
• Otherwise repressor compete for the activation site with the activator. Thus the activator binding is prevented and thus transcription wont takes place.

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