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How do miRNAs modulate gene transcription?

miRNAs block ribosome transcription by forming a complex with the dicer protein and binding to target mRNAs

miRNAs form a complex with the RNA-induced silencing complexes (RISC) and either cleave target mRNAs or bind to mRNAs and block ribosomes reducing or preventing transcription

miRNAs form a complex with the dicer protein and either cleave target mRNAs or bind to mRNAs and block ribosomes

miRNAs serve as decoy RNA for ribosomes competing with the target mRNA and reducing transcription

”Explanation”

RC 10th Ed. p5