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.
All four! The spindle apparatus forms in Prophase, does its main job in Metaphase and Anaphase, then breaks down again during Telophase. The spindle apparatus is of utmost importance in the process of mitosis, as it is responsible for ensuring that the chromosomes are divided equally among the two daughter cells. It begins to form during Prophase, and binds to the centromeres of each chromosome.