Multiple Choice
Which of the following correctly lists the phases of the cell cycle?
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11. Cell Division
Introduction to the Cell Cycle
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In which phase of the cell cycle are chromosomes duplicated?
A
S phase
B
M phase
C
G2 phase
D
G1 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 replicate. These phases include G1, S, G2, and M.
Identify the purpose of each phase: G1 phase is the first gap phase where the cell grows and prepares for DNA replication. S phase is where DNA replication occurs, duplicating the chromosomes. G2 phase is the second gap phase where the cell prepares for mitosis. M phase is where mitosis occurs, leading to cell division.
Focus on chromosome duplication: Chromosome duplication is a key event in the cell cycle, ensuring that each daughter cell receives a complete set of chromosomes.
Recognize the S phase: During the S phase, the cell synthesizes a complete copy of the DNA in its nucleus. This is the phase where chromosome duplication occurs.
Review the options: Given the options (S phase, M phase, G2 phase, G1 phase), identify that the S phase is the correct answer for chromosome duplication.
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