Multiple Choice
During which phase of the cell cycle are chromosomes duplicated (DNA replicated)?
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16. Cell Division
DNA Replication
Multiple Choice
During which phase of the cell cycle does DNA replication occur?
A
S phase of interphase
B
G1 phase of interphase
C
G2 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 is divided into interphase (which includes G1, S, and G2 phases) and the mitotic phase (M phase).
Identify the specific phase where DNA replication occurs, which is the process of copying the cell's DNA to prepare for cell division.
Recognize that DNA replication happens during the S phase (Synthesis phase) of interphase, where the entire genome is duplicated.
Confirm that G1 phase is primarily for cell growth, G2 phase is for preparation for mitosis, and M phase is where the cell actually divides, so DNA replication does not occur in these phases.
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