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

DNA replication is a critical process that ensures that each daughter cell receives an identical copy of the parent cell's DNA. DNA replication occurs during the S phase (Synthesis phase) of the cell cycle. During this phase, the entire DNA in the nucleus is replicated to form two identical copies, preparing for cell division in the M phase (mitosis or meiosis). Thus, DNA replication occurs during the S phase of the cell cycle.