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:

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.

Answer:

• A. During S phase (Correct answer)
• B. During G₂ phase
• C. During G₁ phase
• D. During mitosis