Multiple Choice
In the context of DNA replication, what term describes the copying process by which a cell duplicates its DNA before cell division?
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16. Cell Division
DNA Replication
Multiple Choice
During which phase of the eukaryotic cell cycle are a cell’s chromosomes duplicated by DNA replication?
A
G phase of interphase
B
M phase (mitosis), specifically during anaphase
C
G phase of interphase
D
S phase (synthesis phase) of interphase
Verified step by step guidance1
Understand the phases of the eukaryotic cell cycle, which include G1 phase, S phase, G2 phase (all part of interphase), and M phase (mitosis).
Recall that DNA replication, or chromosome duplication, must occur before mitosis to ensure each daughter cell receives a complete set of chromosomes.
Identify that the S phase (synthesis phase) of interphase is specifically dedicated to DNA replication, where the cell synthesizes a complete copy of its DNA.
Note that G1 phase is primarily for cell growth and preparation for DNA synthesis, while G2 phase is for further growth and preparation for mitosis.
Recognize that M phase involves chromosome segregation and cell division, not DNA replication, so duplication does not occur during mitosis.
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