Multiple Choice
In which phase of the cell cycle is DNA replicated (duplicated) prior to mitosis?
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16. Cell Division
DNA Replication
Multiple Choice
During which stage of the cell cycle are chromosomes (DNA) copied during DNA replication?
A
M phase (mitosis)
B
G1 phase of interphase
C
G2 phase of interphase
D
S phase of interphase
Verified step by step guidance1
Understand that the cell cycle consists of several phases: G1 phase, S phase, G2 phase (all part of interphase), and M phase (mitosis).
Recall that DNA replication is the process of copying chromosomes to ensure each daughter cell receives an identical set of chromosomes.
Identify that DNA replication specifically 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 is for further growth and preparation for mitosis.
Recognize that the M phase is when the cell actually divides, so DNA replication must be completed before this phase begins.
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