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.
Prophase. Mitosis begins; each chromosome and its copy change to sister chromatids (they now look like the X), centrioles appear and begin to move to opposite ends of cell; spindle fibers form between the poles, nuclear membrane disappears, nucleolus disappears. Longest phase of Mitosis.