Multiple Choice
Which enzyme unzips and unwinds the two DNA strands during DNA replication?
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14. DNA Synthesis
Introduction to DNA Replication
Multiple Choice
In which phase of the cell cycle does the cell replicate its DNA?
A
G1 phase
B
G2 phase
C
S phase
D
M phase
Verified step by step guidance1
Understand the cell cycle: The cell cycle consists of several phases that a cell goes through to divide and produce new cells. These phases include G1, S, G2, and M.
Identify the purpose of each phase: The G1 phase is the first gap phase where the cell grows and carries out normal functions. The S phase is where DNA replication occurs. The G2 phase is the second gap phase where the cell prepares for mitosis. The M phase is where mitosis and cytokinesis occur, leading to cell division.
Focus on DNA replication: DNA replication is a critical process where the cell duplicates its DNA, ensuring that each new cell receives a complete set of genetic information.
Determine the phase for DNA replication: Based on the understanding of the cell cycle, DNA replication specifically occurs during the S phase (Synthesis phase).
Conclude with the correct phase: Therefore, the phase of the cell cycle in which the cell replicates its DNA is the S phase.
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