Which statement correctly describes the S Phase in the eukaryotic cell cycle?

The S Phase, or Synthesis Phase, is a crucial part of the eukaryotic cell cycle where DNA replication occurs. This phase follows the G1 Phase, which is the first gap phase focused on cell growth and preparation for DNA synthesis. During the S Phase, each chromosome is replicated to produce sister chromatids, effectively doubling the genetic material in the cell. By the end of this phase, the cell has two copies of each chromosome, which sets the stage for subsequent cell division.

This understanding clarifies why the statement about the S Phase starting after the G1 Phase and being the time dedicated to DNA synthesis is the correct option. The accurate sequencing of the cell cycle phases is fundamental to grasping how cells prepare for division and ensure genetic continuity in daughter cells. Additionally, the context surrounding the other choices provides further clarity on the subject. For instance, while some cells can exit the cell cycle and enter a resting state, this primarily pertains to G0 Phase rather than S Phase itself. Therefore, emphasizing the correct sequencing and function during the S Phase is critical in understanding cell cycle dynamics.