In which phase of the cell cycle are organelles duplicated in preparation for mitosis?

During the cell cycle, organelle duplication primarily occurs in the G2 phase, which is the final subphase of interphase, preceding mitosis. In the G2 phase, the cell continues to grow and produce proteins, and it ensures that all organelles are duplicated correctly to ensure that each daughter cell receives the necessary structures and functions after cell division.

This phase is critical because it guarantees that the cell is fully prepared for mitosis. Any errors in organelle duplication can lead to problems in cell function or complications in the mitotic process, impacting the viability of the daughter cells.

While some organelle duplication can begin in the G1 phase and DNA replication occurs in the S phase, the most significant organelle duplication and preparation for distributing these organelles happens in G2. Thus, recognizing the specific functions of each phase highlights why G2 is the correct answer in relation to organelle duplication.