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Multiple Choice
In the context of the cell cycle, how soon after cytokinesis can daughter cells typically begin the next round of DNA replication?
A
Before the end of telophase
B
Immediately after cytokinesis
C
During the M phase
D
After completing the G1 phase
Verified step by step guidance
1
Understand the cell cycle: The cell cycle consists of several phases: G1 (Gap 1), S (Synthesis), G2 (Gap 2), and M (Mitosis). Cytokinesis is the final step of the M phase, where the cytoplasm divides to form two daughter cells.
Recognize the role of the G1 phase: After cytokinesis, the daughter cells enter the G1 phase. This phase is critical for cell growth, organelle production, and preparation for DNA replication. It is during this phase that the cell ensures it is ready to proceed to the next stage.
Identify when DNA replication occurs: DNA replication takes place during the S phase (Synthesis phase) of the cell cycle. However, the cell must first complete the G1 phase before entering the S phase.
Clarify the timing: DNA replication cannot begin immediately after cytokinesis or during the M phase. The cell must progress through the G1 phase to ensure it has grown sufficiently and passed the necessary checkpoints.
Conclude the correct answer: Daughter cells typically begin the next round of DNA replication only after completing the G1 phase and entering the S phase.