RNA Interference

**Semantic type:** Genetic Function

**Definition:** Sequence-specific posttranscriptional gene silencing. It is mediated by 21- and 22-nucleotide small interfering RNAs (siRNAs) generated by ribonuclease III cleavage from longer dsRNAs.

**Synonyms:** - Post-Transcriptional Gene Silencing - Quelling - RNA Silencing - RNAi - Sequence-Specific Posttranscriptional Gene Silencing