Size of chromosome can be measured easily in

Options

A. metaphase
B. S-phase
C. Telophase
D. Interphase

Answer

To determine when the size of chromosomes can be measured easily, we need to analyze the different phases of the cell cycle mentioned in the question: metaphase, S-phase, telophase, and interphase.

### Step-by-Step Solution:

1. **Understanding Chromosome Structure**: Chromosomes are structures within cells that contain DNA. They are only visible under a microscope when they are condensed.

2. **Identifying the Phases**:
- **Interphase**: This phase includes G1, S, and G2 phases. During interphase, chromosomes are not condensed, making it difficult to measure their size.
- **S-phase**: This is the synthesis phase where DNA replication occurs. Although chromosomes are being duplicated, they are still not condensed.
- **Telophase**: This is the final stage of cell division. During telophase, chromosomes begin to decondense, returning to a less compact form, which also makes size measurement difficult.
- **Metaphase**: This is a stage of cell division where chromosomes are highly condensed and aligned at the cell's equatorial plane. This is the stage where chromosomes can be easily distinguished and measured.

3. **Conclusion**: The size of chromosomes can be measured easily during the **metaphase** of cell division because they are fully condensed and distinct.

### Final Answer:
The size of chromosomes can be measured easily in **metaphase**.

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