Describe the sequence of events in RNA interference involving siRNAs.

• A. siRNAs are phosphorylated to activate translation.
• B. siRNAs are cleaved by Dicer, loaded onto RISC, and degrade complementary mRNA.
• C. siRNAs bind directly to ribosomes to inhibit translation.
• D. siRNAs are transcribed, exported, and translated.

Answer: (B)