How does histone methylation prevent gene expression? Oblocks RNA polymerase access to promoter Oblocks GTF access to promoter Oblocks acetylation of histones all the above
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This can change the structure of the chromatin, making it more tightly packed. Show more…
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Methylation of a CpG motif inhibits gene transcription by a. Physically blocking RNA polymerases b. Attracting histone deacetylases (HDAC) molecules, which reconfigure the chromatin c. Increasing the rate of mutation at the site d. All of the above e. None of the above
Adi S.
Which mechanism below is NOT used in epigenetic control of gene expression?. Acetylation of histones (chromatin) to facilitate transcription. Methylation of histones or DNA to repress transcription. RNA interference to repress transcription. All of the above are epigenetic mechanisms.
e. Methylation of DNA increases gene expression. f. Acetylation of histone proteins is decreases gene expression g. Phosphorylation of histone proteins causes DNA to condense more, decreasing gene expression.
Sri K.
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