Question

Which of the following is true regarding DNA replication?

• A. It occurs during the G1 phase of the cell cycle.
• B. It occurs in the S phase of the cell cycle.
• C. It occurs in the G2 phase of the cell cycle.
• D. It occurs before the mitotic phase.

Hint:

DNA replication occurs during the S phase of the cell cycle to ensure that each daughter cell has a complete set of genetic information after cell division.

Answer 1

The Correct Option is B

The S phase (Synthesis phase) of the cell cycle is when DNA replication takes place. This vital process duplicates the parent cell's DNA, producing two identical copies within the nucleus. This ensures each daughter cell inherits an exact replica of the genetic material in preparation for cell division (mitosis or meiosis) during the M phase.