Question

Why is the centrosome duplicated once every cell cycle?

Answer 1

Centrosome:

1. The centrosome is an organelle found near the nucleus of an eukaryotic cell and contains two centrioles.
2. It anchors, nucleates, and releases microtubules required for organizing microtubule arrays like the mitotic spindle.
3. They are found only in one copy for each cell and are are strictly duplicated during the S-phase only once for every cell cycle.
4. The newly formed centrosomes helps in organizing the mitotic spindles.
5. During mitosis duplicated chromosomes move to the opposite poles of cells forming spindles and therefore, enabling the distribution of one centrosome from the parent cell to each daughter cell during cytokinesis.