Chromatin condenses to form discrete, visible chromosomes-

Options

A. Early in `G_(1)`
B. During S phase
C. During telophase
D. During prophase

Answer

To answer the question "When does chromatin condense to form discrete, visible chromosomes?", we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Cell Cycle Phases**: The cell cycle consists of several phases: G1 (Gap 1), S (Synthesis), G2 (Gap 2), and M (Mitosis). Mitosis is further divided into several stages: Prophase, Metaphase, Anaphase, and Telophase.

2. **Identify Interphase**: The first three phases (G1, S, and G2) are collectively known as Interphase. During Interphase, the cell grows, duplicates its DNA, and prepares for division.

3. **Focus on M Phase**: The M phase is where actual cell division occurs. This phase includes Prophase, Metaphase, Anaphase, and Telophase.

4. **Recognize Chromatin Behavior**: Chromatin is the material that makes up chromosomes, consisting of DNA and proteins. During the cell cycle, chromatin is generally in a relaxed state, allowing for DNA replication and transcription.

5. **Determine the Stage of Chromatin Condensation**: It is during Prophase, the first stage of Mitosis, that chromatin condenses into discrete, visible chromosomes. This is when the chromosomes become tightly packed and can be seen under a microscope.

6. **Conclude the Answer**: Therefore, the correct answer to the question is that chromatin condenses to form discrete, visible chromosomes during Prophase.

### Final Answer:
Chromatin condenses to form discrete, visible chromosomes during Prophase.

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