1. Information passes from genetic material to cytoplasm of the same cell
2. Flow of information is controlled by internal environment of the cell.
3. It helps in the production of a polypeptide either for structural or enzymatic function.
Flow of Extrinsic information
1. Flow of information is from outside to the interior of a cell.
2. Flow of information is controlled by extra cellular environment.
3. It activates a gene or a preformed enzymatic system.