Why is synthesis phase good name for sub-phase of interphase?

The synthesis phase, or S phase, is aptly named because it is during this stage of interphase that DNA replication occurs, resulting in the synthesis of new DNA strands. This process is crucial for ensuring that each daughter cell receives an identical copy of the genetic material during cell division. The term "synthesis" reflects the active construction and duplication of the cell's genetic information, which is essential for cell growth and division.