Centriole

Centrioles play a major role in the division of cells. During interphase centrioles and other components of the cell are duplicated. At first the two pairs of centrioles remain close to each other, but as mitosis starts, the original centrosome divides and the pairs are split up so that one set of centrioles is found in each of the new microtubule-organizing centers. These new centers radiate microtubules in star-shaped clusters called **asters**.