Draw a labelled sketch showing various stages of meiosis.

Answer

### Step-by-Step Solution for Drawing the Stages of Meiosis

1. **Title the Sketch**: Start by writing "Stages of Meiosis" at the top of your sketch.

2. **Draw Prophase I**:
- Illustrate a cell with chromosomes that are duplicated and condensed.
- Show homologous chromosomes pairing up (synapsis) to form tetrads.
- Label the stages within Prophase I:
- **Leptotene**: Chromosomes start to condense.
- **Zygotene**: Homologous chromosomes pair up.
- **Pachytene**: Crossover occurs between homologous chromosomes.
- **Diplotene**: Chiasmata (X-shaped structures) form.
- **Diakinesis**: Chromosomes are fully condensed and ready for metaphase.

3. **Draw Metaphase I**:
- Illustrate the homologous chromosomes lined up at the equatorial plate.
- Label the spindle fibers that are attached to the centromeres of the homologous chromosomes.

4. **Draw Anaphase I**:
- Show the homologous chromosomes being pulled apart towards opposite poles of the cell.
- Label the movement of chromosomes and the spindle fibers.

5. **Draw Telophase I and Cytokinesis**:
- Illustrate two new cells forming, each with half the number of chromosomes (n).
- Label the two daughter cells.

6. **Draw Prophase II**:
- Illustrate the two cells from Telophase I, showing chromosomes condensing again.
- Label the spindle apparatus forming.

7. **Draw Metaphase II**:
- Show the chromosomes lined up at the equatorial plate in both cells.
- Note that there are no homologous pairs, just individual chromosomes.

8. **Draw Anaphase II**:
- Illustrate the sister chromatids being pulled apart towards opposite poles.
- Label the chromatids.

9. **Draw Telophase II and Final Cytokinesis**:
- Illustrate the division of the two cells into four daughter cells.
- Label each of the four daughter cells, indicating that they are haploid (n).

10. **Final Labeling**:
- Ensure all stages are clearly labeled with arrows indicating the progression from one stage to the next.
- Add any additional notes about the significance of meiosis, such as genetic variation due to crossing over.