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.
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Acetylation of histones (chromatin) facilitates transcription: This is an epigenetic mechanism, as it involves modification of histones to control gene expression. Show more…
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Which of the following is NOT an example of epigenetic regulation of gene expression? A. Covalent modifications on histone proteins bound to DNA that establish the pattern of chromatin structure and DNA accessibility. B. Positive feedback loops that can involve transcription regulator activating its own transcription in addition to other genes. C. Unwinding the DNA between the start site and the promoter, attracting RNA polymerase, and modifying before binding to the promoter. D. DNA methylation - covalent modification that occurs on cytosine bases, that typically turns off gene expression by attracting proteins that block transcription.
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Which of the following are epigenetic changes that can affect gene expression? Select 2 answers a) Alternative splicing of the transcript b) Methylation of DNA c) Enhancers of transcription d) Acetylation of histones e) Degradation of the mRNA
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