Multiple Choice
During which phase of the cell cycle is DNA replicated, resulting in duplicated chromosomes (sister chromatids) prior to mitosis?
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16. Cell Division
DNA Replication
Multiple Choice
During the eukaryotic cell cycle, in which phase is DNA replicated in preparation for cell division?
A
G phase (second gap) of interphase
B
M phase (mitosis/cytokinesis)
C
S phase (synthesis phase) of interphase
D
G phase (first gap) of interphase
Verified step by step guidance1
Understand the phases of the eukaryotic cell cycle: G1 phase (first gap), S phase (synthesis), G2 phase (second gap), and M phase (mitosis/cytokinesis).
Recall that DNA replication is the process of copying the cell's DNA to ensure each daughter cell receives an identical set of chromosomes.
Identify that DNA replication occurs during the S phase (synthesis phase) of interphase, where the cell synthesizes a complete copy of its DNA.
Note that the G1 phase is primarily for cell growth and preparation for DNA synthesis, while the G2 phase involves preparation for mitosis, and the M phase is where cell division occurs.
Conclude that the correct phase for DNA replication is the S phase of interphase.
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