A continent is what floats on top of the plate. There are continental and oceanic plates. The continents float on the continental plate and the ocean sits on the oceanic plate â¦ . But there are also plates that carry both continents and oceans.
Definition of Control (genetic). Control (genetic): The control of gene expression. Genetic control may be on the transcriptional or translational level. Transcriptional control works by controlling the number of RNA transcripts of a region of DNA, indirectly controlling protein synthesis.
So far we have some pretty powerful systems to be able to regulate the genetic production of proteins. Transcription factors and gene controllers allow us to amplify or repress gene expression, or to completely turn genes on and off. However, on the time scale of cellular processes gene expression is too slow. It takes a long time to produce a large quantity of a protein and ship it to where it is needed.