favors those individuals who have ONE of the extreme variations in traits within a population. Directional selection is a type of natural selection that favors one extreme phenotype over the mean (average form) or other extreme. Changes in weather, climate, or food availability lead to directional
Bus (computing) In computer architecture, a bus (a contraction of the Latin omnibus) is a communication system that transfers data between components inside a computer, or between computers. This expression covers all related hardware components (wire, optical fiber, etc.) and software, including communication protocols.
Characteristics. A bus is characterised by the amount of information that can be transmitted at once. This amount, expressed in bits, corresponds to the number of physical lines over which data is sent simultaneously. A 32-wire ribbon cable can transmit 32 bits in parallel.