Multiple Choice
What occurs during the G1 phase of the cell cycle?
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11. Cell Division
Introduction to the Cell Cycle
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During which stage of the cell cycle is DNA copied?
A
G1 phase
B
M phase
C
G2 phase
D
S phase
Verified step by step guidance1
Understand the cell cycle: The cell cycle consists of several phases that a cell goes through to divide and produce new cells. These phases include G1, S, G2, and M.
Identify the purpose of each phase: The G1 phase is the first gap phase where the cell grows and carries out normal functions. The S phase is where DNA replication occurs. The G2 phase is the second gap phase where the cell prepares for mitosis. The M phase is where mitosis and cytokinesis occur, leading to cell division.
Focus on DNA replication: DNA replication is a critical process where the cell makes an exact copy of its DNA. This ensures that each daughter cell receives a complete set of genetic information.
Determine the phase for DNA replication: Since DNA replication is the process of copying DNA, it occurs during the S phase of the cell cycle.
Conclude with the correct phase: Therefore, the stage of the cell cycle during which DNA is copied is the S phase.
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