Final answer:
Mitosis and meiosis are two different processes of cell division. The phases of mitosis are prophase, metaphase, anaphase, and telophase. The most crucial phase for entry into the cell cycle is the G1 phase of interphase.
Step-by-step explanation:
Mitosis is the process by which a cell divides and produces two daughter cells that are genetically identical to the parent cell. Meiosis, on the other hand, is the process by which cells divide to produce four daughter cells that have half the number of chromosomes as the parent cell.
The phases of mitosis are: prophase, metaphase, anaphase, and telophase.
The most crucial phase for entry into the cell cycle is the G1 phase of interphase, during which the cell grows and prepares for DNA replication.