The centrosome is duplicated during the S phase. The two centrosomes will give rise to the mitotic spindle, the apparatus that orchestrates the movement of chromosomes during mitosis.

Do centrosomes replicate during S phase?

The centrosome cycle consists of four phases that are synchronized to the cell cycle. These include: centrosome duplication during the G1 phase and S Phase, centrosome maturation in the G2 phase, centrosome separation in the mitotic phase, and centrosome disorientation in the late mitotic phase—G1 phase.

Are centrosomes replicated before M phase begins?

Two critical events must be completed in interphase before M phase begins—replication of the DNA and, in animal cells, duplication of the centrosome. ... The process of centrosome duplication and separation is known as the centrosome cycle.