Editing Cell nucleus (section)

===Replication===
{{Main|Eukaryotic DNA replication}}

The main function of the cell nucleus is to control gene expression and mediate the replication of DNA during the cell cycle.<ref name = "Lodish" />{{rp|171}} It has been found that replication happens in a localised way in the cell nucleus. In the S phase of interphase of the cell cycle; replication takes place. Contrary to the traditional view of moving replication forks along stagnant DNA, a concept of  ''replication factories'' emerged, which means replication forks are concentrated towards some immobilised 'factory' regions through which the template DNA strands pass like conveyor belts.<ref name="Hozák_1994">{{cite journal | vauthors = Hozák P, Cook PR | title = Replication factories | journal = Trends in Cell Biology | volume = 4 | issue = 2 | pages = 48–52 | date = February 1994 | pmid = 14731866 | doi = 10.1016/0962-8924(94)90009-4 | department = Review }}</ref>