Multiple Choice
During what phase of the cell cycle is DNA replicated?
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16. Cell Division
DNA Replication
Multiple Choice
During which phase of the eukaryotic cell cycle is DNA replicated?
A
S phase (synthesis phase) of interphase
B
M phase (mitosis)
C
G1 phase of interphase
D
G2 phase of interphase
Verified step by step guidance1
Understand the eukaryotic cell cycle phases: G1 phase (cell growth), S phase (DNA synthesis), G2 phase (preparation for mitosis), and M phase (mitosis, cell division).
Recall that DNA replication is the process of copying the cell's entire genome to ensure each daughter cell receives a complete set of chromosomes.
Identify which phase is responsible for DNA synthesis by definition: the S phase (synthesis phase) is when DNA replication occurs.
Recognize that G1 and G2 phases are primarily for cell growth and preparation, not DNA replication, and M phase is for chromosome segregation and cell division.
Conclude that DNA replication takes place specifically during the S phase of interphase.
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