In which stage of cell division the nucleus looks like a ball of wool (spireme stage) ?

Options

A. Prophase
B. Prophase I
C. Anaphase
D. Cytokinesis

Answer

To determine in which stage of cell division the nucleus appears like a ball of wool (spireme stage), we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Types of Cell Division**:
- Cell division occurs mainly through two processes: mitosis and meiosis. Mitosis results in two daughter cells, while meiosis results in four daughter cells.

2. **Identify the Stages of Mitosis and Meiosis**:
- Mitosis has several stages: prophase, metaphase, anaphase, and telophase.
- Meiosis also has stages, including prophase I, metaphase I, anaphase I, and telophase I, followed by a second round of these stages.

3. **Focus on Prophase**:
- During prophase, the chromatin condenses to form visible chromosomes. The chromosomes become more compact and start to overlap.

4. **Recognize the Appearance of Chromosomes**:
- In prophase, the overlapping chromosomes can create a structure that resembles a ball of wool. This is due to the ends of the chromosomes (telomeres) not being visible, leading to a spireme appearance.

5. **Differentiate Between Prophase and Prophase I**:
- While both prophase (in mitosis) and prophase I (in meiosis) involve chromosomal condensation, the question specifically refers to the appearance of the nucleus as a ball of wool, which is characteristic of prophase.

6. **Eliminate Other Options**:
- Anaphase involves the separation of chromosomes, and cytokinesis is the division of the cytoplasm. Neither of these stages would show the nucleus in a spireme form.

7. **Conclude the Answer**:
- Therefore, the stage of cell division where the nucleus looks like a ball of wool (spireme stage) is **prophase**.

### Final Answer:
The stage of cell division in which the nucleus looks like a ball of wool (spireme stage) is **prophase**.

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