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Which of the following best describes the mechanism(s) by which the RNA interfer

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Which of the following best describes the mechanism(s) by which the RNA interfer

Which of the following best describes the mechanism(s) by which the RNA interference (RNAi) pathway regulates gene expression?


A) The RNAi pathway prevents RNA Pol II from escaping the promoter thus blocking transcription.


B) The RNAi pathway prevents pre-mRNA transcripts from being spliced correctly therefore the proteins that are produced are derived from both exons and introns (the proteins are dysfunctional).


C) The RNAi pathway interferes with the proper editing of mRNA transcripts therefore the translated proteins are not appropriate for the cell or tissue type in which they reside


D) The RNAi pathway can either degrade mRNA transcripts or can block transcripts from being translated by the ribosome.

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