Multiple Choice
In the context of DNA replication, what term best 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 is DNA replicated?
A
G2 phase of interphase
B
S phase (synthesis phase) of interphase
C
M phase (mitosis)
D
G1 phase of interphase
Verified step by step guidance1
Understand the phases of the eukaryotic cell cycle: G1 phase (cell growth), S phase (DNA synthesis), G2 phase (preparation for mitosis), and M phase (mitosis or cell division).
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 which phase is specifically dedicated to DNA synthesis; this is the S phase, where the cell duplicates its entire genome.
Recognize that G1 phase involves cell growth and normal functions, G2 phase involves preparation for mitosis, and M phase is when the cell actually divides.
Conclude that DNA replication occurs during the S phase of interphase, making it the correct answer.
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