Cell division usually involves

Options

A. Karyokinesis followed by cytokinesis
B. Karyokinesis preceded by cytokinesis
C. Cytokinesis followed by karyokinesis
D. 1 and 3

Answer

**Step-by-Step Solution:**

1. **Understanding Cell Division**: Cell division is the process by which a parent cell divides to form two daughter cells. This process is essential for growth, development, and repair in multicellular organisms.

2. **Identifying the Two Main Processes**: Cell division typically involves two main processes:
- **Cytokinesis**: This is the division of the cytoplasm, which occurs after the nucleus has divided.
- **Karyokinesis**: This is the division of the nucleus, which occurs before cytokinesis.

3. **Sequence of Events**: In a typical cell division:
- First, the nucleus divides (karyokinesis).
- Then, the cytoplasm divides (cytokinesis).
Therefore, the correct sequence is karyokinesis followed by cytokinesis.

4. **Analyzing the Options**: The options given in the question are:
- Option 1: Karyokinesis followed by cytokinesis
- Option 2: Karyokinesis preceded by cytokinesis
- Option 3: Cytokinesis followed by karyokinesis
- Option 4: Options 1 and 3

Based on our understanding, option 1 is correct because karyokinesis occurs first, followed by cytokinesis.

5. **Conclusion**: The correct answer to the question "Cell division usually involves" is option 1: Karyokinesis followed by cytokinesis.

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