Here's a breakdown of the cell cycle phases and what happens in each:

* Interphase: This is the longest phase of the cell cycle and is divided into three sub-phases:

* G1 phase (first gap): The cell grows and carries out its normal functions.

* S phase (synthesis): The cell replicates its DNA, ensuring that each daughter cell receives a complete copy of the genome.

* G2 phase (second gap): The cell prepares for mitosis, producing necessary proteins and organelles.

* M phase (mitosis): This is the phase where the cell divides into two daughter cells. It consists of:

* Prophase: Chromosomes condense and become visible.

* Metaphase: Chromosomes line up at the center of the cell.

* Anaphase: Sister chromatids separate and move to opposite poles of the cell.

* Telophase: Nuclear envelopes form around the separated chromosomes, and the cell begins to divide.

* Cytokinesis: The cytoplasm divides, completing the formation of two daughter cells.

So, while DNA replication occurs during the S phase, it's important to remember that it's part of the larger cell cycle process.