Best Answer: Bound's hubby here: A bull barrel is typically a barrel of larger diameter than a typical sporter barrel ... bull barrels are about 1 in diameter.Rifles that typically have bull barrels are varmint rifles and target rifles.These barrels serve two major fuctions ... First, bull barrels are stiffer and resist the harmonic vibrations generated by a bullet streaking down the bore ...ifles that typically have bull barrels are varmint rifles and target rifles. These barrels serve two major fuctions ... First, bull barrels are stiffer and resist the harmonic vibrations generated by a bullet streaking down the bore ...
Signalling theory. Within evolutionary biology, signalling theory is a body of theoretical work examining communication between individuals, both within species and across species. The central question is when organisms with conflicting interests, such as in sexual selection, should be expected to provide honest signals rather than cheating. Mathematical models describe how signalling can contribute to an evolutionarily stable strategy. Signals are given in contexts such as mate selection by females, which subject
Cell signaling has been most extensively studied in the context of human diseases and signaling between cells of a single organism. However, cell signaling may also occur between the cells of two different organisms.In many mammals, early embryo cells exchange signals with cells of the uterus.In the human gastrointestinal tract, bacteria exchange signals with each other and with human epithelial and immune system cells.uch networks are complex systems in their organization and may exhibit a number of emergent properties including bistability and ultrasensitivity. Analysis of cell signaling networks requires a combination of experimental and theoretical approaches including the development and analysis of simulations and modeling.