1. Interphase: This is the longest phase of the cell cycle, where the cell grows and copies its DNA. Interphase is further subdivided into three stages:

* G1 Phase (First Gap): The cell grows and carries out normal metabolic activities.

* S Phase (Synthesis): The cell replicates its DNA, creating two identical copies of its genome.

* G2 Phase (Second Gap): The cell continues to grow and prepares for mitosis.

2. M Phase (Mitosis): This is the phase where the cell divides its nucleus and cytoplasm, resulting in two daughter cells. M phase is also further subdivided into two stages:

* Mitosis: The process of nuclear division, where the replicated chromosomes are separated into two identical sets.

* Cytokinesis: The division of the cytoplasm, which physically separates the two daughter cells.

Therefore, the two main parts of the cell cycle are Interphase and M Phase.