Question

at which point in the cell cycle does dna replication take place?

a. during s phase
b. during \\(g_2\\) phase
c. during \\(g_1\\) phase
d. during mitosis

Explanation:

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<reasoning>

Identify the stages of the cell cycle

The eukaryotic cell cycle is divided into interphase and the mitotic (M) phase. Interphase consists of three distinct sub-phases:

• \(G_1\) phase (First Gap): Cell growth and normal metabolic roles.
• S phase (Synthesis): Replication of the genetic material (DNA).
• \(G_2\) phase (Second Gap): Growth and final preparation for division.

Determine when DNA replication occurs

During the S (Synthesis) phase, the cell replicates its entire genome so that each of the two future daughter cells will receive a complete copy of the DNA.
</reasoning>

<answer>
<mcq-correct>A. During S phase</mcq-correct>
<mcq-option>B. During G₂ phase</mcq-option>
<mcq-option>C. During G₁ phase</mcq-option>
<mcq-option>D. During mitosis</mcq-option>
</answer>

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Answer:

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<reasoning>

Identify the stages of the cell cycle

The eukaryotic cell cycle is divided into interphase and the mitotic (M) phase. Interphase consists of three distinct sub-phases:

• \(G_1\) phase (First Gap): Cell growth and normal metabolic roles.
• S phase (Synthesis): Replication of the genetic material (DNA).
• \(G_2\) phase (Second Gap): Growth and final preparation for division.

Determine when DNA replication occurs

During the S (Synthesis) phase, the cell replicates its entire genome so that each of the two future daughter cells will receive a complete copy of the DNA.
</reasoning>

<answer>
<mcq-correct>A. During S phase</mcq-correct>
<mcq-option>B. During G₂ phase</mcq-option>
<mcq-option>C. During G₁ phase</mcq-option>
<mcq-option>D. During mitosis</mcq-option>
</answer>

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