Multiple Choice
In the eukaryotic cell cycle, when are chromosomes duplicated relative to mitosis?
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16. Cell Division
DNA Replication
Multiple Choice
During which phase of the cell cycle are chromosomes duplicated (DNA replication occurs)?
A
G2 phase of interphase
B
S phase of interphase
C
G1 phase of interphase
D
M phase (mitosis)
Verified step by step guidance1
Understand the phases of the cell cycle: G1 phase, S phase, G2 phase, and M phase (mitosis).
Recall that the cell cycle consists of interphase (G1, S, G2) and the mitotic phase (M phase).
Identify that DNA replication, or chromosome duplication, must occur before mitosis to ensure each daughter cell receives a complete set of chromosomes.
Recognize that the S phase (Synthesis phase) of interphase is specifically dedicated to DNA replication.
Conclude that chromosomes are duplicated during the S phase of interphase, not during G1, G2, or M phase.
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