Multiple Choice
During the eukaryotic cell cycle, in which phase is DNA replicated in preparation for cell division?
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16. Cell Division
DNA Replication
Multiple Choice
During which phase of the cell cycle are chromosomes duplicated (DNA replicated)?
A
M phase (mitosis)
B
S phase (synthesis) of interphase
C
G2 phase of interphase
D
G1 phase of interphase
Verified step by step guidance1
Understand the overall structure of the cell cycle, which consists of interphase and the M phase (mitosis). Interphase includes G1, S, and G2 phases.
Recall that DNA replication, or chromosome duplication, occurs during the S phase (synthesis phase) of interphase, where the cell synthesizes a complete copy of its DNA.
Recognize that the G1 phase is primarily for cell growth and preparation for DNA synthesis, but DNA is not duplicated here.
Know that the G2 phase is for further growth and preparation for mitosis, but DNA replication has already been completed by this point.
Confirm that the M phase (mitosis) is when the duplicated chromosomes are separated into two daughter cells, not when DNA is replicated.
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