What stage of interphase does DNA replication occur?

DNA replication occurs during the S phase (Synthesis phase) of interphase. The interphase is the phase of the cell cycle in which the cell is preparing for division, and it includes three subphases: G1 (growth), S (synthesis), and G2 (growth). During the S phase, the cell’s DNA is replicated to ensure that both daughter cells will receive a complete set of chromosomes. This phase is crucial for the proper segregation of genetic material during cell division.