These are bidirectionally transcribed and separated by intergenic regions. The housekeeping functions are coupled bidirectionally to the cell cycle control system. Gaussian Beam propagation predicts an increasing beam width bidirectionally away from the geometric focus. Because all brain areas are bidirectionally coupled, these connections between brain areas form feedback loops. Information flows bidirectionally between smaller and larger systems as well as rhizomatic contagion. The synchronization is performed bidirectionally between two endpoints ("Remote" and "Local" repositories). The overrepresentation of bidirectionally paired DNA repair genes associates these promoters with cancer. The cytoplasm of this organism is thick and streams bidirectionally through the veins. Shortly after, the E. coli chromosome was also shown to replicate bidirectionally. Some functional classes of genes are more likely to be bidirectionally paired than others. An "E"-proposition distributes bidirectionally between the subject and predicate. About 11% of human genes are bidirectionally paired. These bidirectionally predicted frames are called "B-frames". Neuroethology and technology contribute to one another bidirectionally. It further explains that both the person and the environment affect one another bidirectionally.