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.
Spindle Fibers in Mitosis. During prophase of mitosis, spindle fibers form at opposite poles of the cell. In animal cells, the mitotic spindle initially appears as asters, which surround each centriole pair. The cell becomes elongated as spindle fibers extend from each cell pole. Sister chromatids attach to spindle fibers at their kinetochores.