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
Juxtacrine signalling. Notch-mediated juxtacrine signal between adjacent cells. In biology, juxtacrine signalling (or contact-dependent signalling) is a type of cell / cell or cell / extracellular matrix signalling in multicellular organisms that requires close contact.