Routing Protocol Definition. A routing protocol is a set of rules used by routers to determine the most appropriate paths into which they should forward packets towards their intended destinations.
Spindle fibers are protein structures that form early in mitosis, or cell division. They consist of microtubules that originate from the centrioles, two wheel-shaped bodies located in the centromere area of the cell. The centromere is also known as the microtubule organizing center.
There are five main steps of mitosis. 1  Prophase: the nuclear envelope breaks down, chromosomes condense, and spindle fibers connect to sister chromatids. 2  Metaphase: spindle fibers pull sister chromatids to the metaphase plate at the equator of the cell. 3  Anaphase: spindle fibers separate sister chromatids to opposite poles of the cell.