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Multiple Choice
Which of the following statements is correct regarding the events of the cell cycle?
A
Mitosis occurs during the G2 phase of the cell cycle.
B
The S phase is when the cell divides into two daughter cells.
C
The G1 phase is primarily focused on cell growth and preparation for DNA replication.
D
DNA replication occurs during the G1 phase.
Verified step by step guidance
1
Understand the cell cycle phases: The cell cycle consists of interphase (G1, S, and G2 phases) and the mitotic phase (M phase).
Identify the G1 phase: The G1 phase is the first phase of interphase, where the cell grows and prepares for DNA replication. It is primarily focused on cell growth and the synthesis of proteins necessary for DNA replication.
Clarify the S phase: The S phase is the part of interphase where DNA replication occurs. During this phase, the cell synthesizes a complete copy of the DNA in its nucleus.
Explain the G2 phase: The G2 phase follows the S phase and is a period of further growth and preparation for mitosis. The cell ensures that DNA replication has been completed successfully and begins to form the structures necessary for cell division.
Describe the M phase: Mitosis, or the M phase, is the part of the cell cycle where the cell divides its copied DNA and cytoplasm to form two new daughter cells. It does not occur during the G2 phase but follows it.