During which of these stages does DNA replication occur?A. ProphaseB. MetaphaseC. InterphaseD. None of the above

Break Down the Problem

1. Identify the stages of the cell cycle mentioned in the options: Prophase, Metaphase, Interphase.
2. Determine when DNA replication occurs in relation to these stages.

Relevant Concepts

• The cell cycle consists of several phases: Interphase (which includes G1, S, and G2 phases), M phase (which includes mitosis - Prophase, Metaphase, Anaphase, and Telophase).
• DNA replication specifically occurs during the S phase of Interphase.

Analysis and Detail

1. Prophase: This is the first stage of mitosis where chromosomes condense but DNA replication has already occurred.
2. Metaphase: This is the second stage of mitosis where the chromosomes align at the cell's equatorial plate; again, DNA replication has already been completed prior to this phase.
3. Interphase: This is the longest phase of the cell cycle, during which the cell grows and DNA is duplicated. The key part relevant to the question is the S (synthesis) phase in which DNA replication actually takes place.

Verify and Summarize

The only option that includes the time during which DNA replication occurs is Interphase, specifically the S phase. Both Prophase and Metaphase occur after DNA replication has already taken place.

Final Answer

C. Interphase