When does DNA replication occur in a eukaryote? S-phase M-phase Interphase G-2 phase

## Step 1<br />In eukaryotic cells, DNA replication occurs during the S phase (synthesis phase) of the cell cycle. The cell cycle is a series of events that cells go through as they divide and grow. It consists of four main phases: G1, S, G2, and M.<br /><br />## Step 2<br />The S phase is the part of the cell cycle where DNA is replicated. This phase follows the G1 phase and precedes the G2 phase. During the S phase, each chromosome is replicated to produce two identical copies, which are called sister chromatids.<br /><br />## Step 3<br />The M phase (mitosis) is when the cell divides its DNA and cytoplasm to produce two daughter cells. This G2 phase and precedes the G1 phase.<br /><br />## Step 4<br />Interphase is the phase of the cell cycle where the cell grows and replicates its DNA. It includes the G1, S, and G2 phases.<br /><br />## Step 5<br />The G2 phase is the part of interphase where the cell prepares for mitosis. It follows the S phase and precedes the M phase.