Gene Regulation: Operons and Epigenetics · Zoology

RNA interference regulates gene expression by:

  1. Promoting DNA replication
  2. Blocking transcription initiation
  3. Silencing mRNA via degradation or translational block
  4. Remodeling histone structure
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Correct answer: Silencing mRNA via degradation or translational block

RNA interference uses small RNAs (siRNA or miRNA) to guide the RISC complex to complementary mRNA sequences. RISC then either degrades the mRNA or stalls its translation, reducing protein output.

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