During what phase do centrosomes replicate in cell division?

Chromosomes replicate during interphase. Specifically it occurs during S-phase which is one of three phases in interphase.

Post Merge: 11 years ago

State   Description   Abbreviation
quiescent/
senescent   Gap 0   G0   A resting phase where the cell has left the cycle and has stopped dividing.
Interphase   Gap 1   G1   Cells increase in size in Gap 1. The G1 checkpoint control mechanism ensures that everything is ready for DNA synthesis.
Synthesis   S   DNA replication occurs during this phase.
Gap 2   G2   During the gap between DNA synthesis and mitosis, the cell will continue to grow. The G2 checkpoint control mechanism ensures that everything is ready to enter the M (mitosis) phase and divide.
Cell division   Mitosis   M   Cell growth stops at this stage and cellular energy is focused on the orderly division into two daughter cells. A checkpoint in the middle of mitosis (Metaphase Checkpoint) ensures that the cell is ready to complete cell division.