G2 phase
after DNA is replicated, cell continues to grow and make proteins
The G2 phase is the second gap or growth phase in the cell cycle that follows the S phase (DNA synthesis phase) and precedes the M phase (mitosis phase). During the G2 phase, the cell prepares for mitosis by synthesizing and assembling the proteins necessary for cell division, such as the mitotic spindle fibers.
The G2 phase is characterized by cell growth and centrosome replication, which are important for proper segregation of the chromosomes during cell division. The centrosome is the main microtubule organizing center of the cell, and it plays a crucial role in spindle formation and chromosome segregation during mitosis. During the G2 phase, the centrosome replicates itself so that two fully formed centrosomes are present in the cell when mitosis occurs.
The G2 phase is also a checkpoint in the cell cycle, where the cell checks for DNA damage and repairs any errors before proceeding to mitosis. Failure to repair DNA damage results in cell cycle arrest or even cell death to prevent abnormal or damaged cells from dividing and propagating.
Overall, the G2 phase is a crucial stage in the cell cycle that prepares the cell for mitosis by ensuring that all the necessary cellular components are in place and that DNA replication is accurate.
More Answers:
Mitosis: The Four Phases of Cell Division ExplainedUnraveling the Complex Mechanisms of Chromatin Structure and Regulation: Implications for Gene Expression and Disease
Critical Role of Sister Chromatids in Cell Division and Genetic Diversity