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Chromosomes carry the essential genetic information of each cell.
When cells divide they need to make sure their chromosomes get evenly distributed onto their new-born daughter cells. Too many or too little chromosomes can have deleterious effects and switch a cell into a cancer cell. The machinery that helps cells divide must therefore itself be set up correctly at the appropriate time to ensure proper cell division. Key components of this process are the two centrosomes that first build up and then hold together the mechanic machinery that pulls cells and their chromosomes apart. Before a cell decides to divide, it needs first needs to duplicate its centrosomes and coordinate this with the replication of its genetic material.