Practice question
Question
RNA interference (RNAi) or Post-Transcriptional Gene Silencing (PTGS) is a conserved biological response to:
Explanation
RNA interference is triggered by long double-stranded RNA recognized by Dicer, which cleaves it into small interfering RNAs. These siRNAs guide Argonaute in RISC to degrade complementary mRNA, serving as conserved antiviral defense and endogenous gene regulation mechanism.
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