RNA interference, or RNAi, is a well-recognized and evolutionarily conserved pathway of cellular defense that has been observed in nearly every eukaryotic organism studied. The functional component that directs RNAi is a 21-23 nucleotide (nt) RNA duplex, also know as a small interfering RNA or siRNA. In nature these duplexes are produced by the cell in response to a number of events that generate long double-stranded RNA transcripts. Examples of such events include viral replication, sequence transposition and abnormal transcription of native genes.
miner. 1  Also called mineworker. a person who works in a mine, especially a commercial mine producing coal or metallic ores. 2  a mechanical device used in mining: a miner for extracting ores from the ocean floor. 3  any of several Australian birds of the genus Manorina, feeding on honey and typically having a loud call.
A farmer[1] (also called an agriculturer) is a person engaged in agriculture, raising living organisms for food or raw materials. The term usually applies to people who do some combination of raising field crops, orchards, vineyards, poultry, or other livestock. A farmer might own the farmed land or might work as a laborer on land owned by others, but in advanced economies, a farmer is usually a farm owner, while employees of the farm are known as farm workers, or farmhands.