Which is NOT part of Interphase?

Interphase is a significant phase of the cell cycle during which the cell prepares for division, and it comprises three distinct sub-phases: G1 (Gap 1), S (Synthesis), and G2 (Gap 2). During G1, the cell grows and synthesizes proteins necessary for DNA replication. In the S phase, the cell duplicates its DNA, ensuring that each daughter cell will receive an identical set of chromosomes. Finally, during G2, the cell continues to grow and produces proteins that will be required for mitosis, the process by which the cell divides.

Mitosis, however, is not a part of interphase; it is a separate process that follows interphase and encompasses the actual division of the nucleus and its chromosomal material into two daughter nuclei. While mitosis is crucial for cell division, it occurs after the interphase phases have been completed, thus distinguishing it clearly as outside of interphase. Understanding this hierarchy of the cell cycle is essential in both cell biology and tissue engineering, as it frames how cells grow, function, and replicate in various contexts, including tissue regeneration and repair.