Answer:
The response is miRNAs
Explanation:
MicroRNAs (miRNAs) are evolutionary conserved noncoding RNAs capable of controlling gene expression both at transcriptional and posttranscriptional levels. Moreover, RITS and RISC are multi-protein complexes that are composed by Argonaute (Ago) proteins bound to miRNAs. These complexes are known to silence target gene expression by the RNA interference mechanism