The biological species concept is the most widely accepted species concept. It defines species in terms of interbreeding. For instance, Ernst Mayr defined a species as follows:species are groups of interbreeding natural populations that are reproductively isolated from other such groups..The biological species concept explains why the members of a species resemble one another, i.e. form phenetic clusters, and differ from other species.When two organisms breed within a species, their genes pass into their combined offspring.he biological species concept explains why the members of a species resemble one another, i.e. form phenetic clusters, and differ from other species. When two organisms breed within a species, their genes pass into their combined offspring.
conduit - a passage (a pipe or tunnel) through which water or electric wires can pass; the computers were connected through a system of conduits. aqueduct - a conduit that resembles a bridge but carries water over a valley. duct - an enclosed conduit for a fluid.
Electrical conduit and bus duct in a building at Texaco Nanticoke refinery in Nanticoke, Ontario, 1980s. An electrical conduit is a tube used to protect and route electrical wiring in a building or nonbuilding structure. Electrical conduit may be made of metal, plastic, fiber, or fired clay.Most conduit is rigid, but flexible conduit is used for some purposes.Conduit is generally installed by electricians at the site of installation of electrical equipment.ost conduit is rigid, but flexible conduit is used for some purposes. Conduit is generally installed by electricians at the site of installation of electrical equipment.