"Bouquet-stage" occur in which sub stages of prophase -I ?

Options

A. zygotene
B. leptotene
C. pachytene
D. diplotene

Answer

**Step-by-Step Text Solution:**

1. **Understanding Prophase I of Meiosis**: Prophase I is a crucial stage of meiosis, which is a type of cell division that reduces the chromosome number by half, resulting in the formation of four haploid daughter cells.

2. **Sub-stages of Prophase I**: Prophase I is divided into five sub-stages:
- Leptotene
- Zygotene
- Pachytene
- Diplotene
- Diakinesis

3. **Identifying the Bouquet Stage**: The "bouquet stage" refers to a specific arrangement of chromosomes that occurs during one of these sub-stages.

4. **Locating the Bouquet Stage**: The bouquet stage occurs during the **Leptotene** sub-stage of Prophase I. During this stage, the telomeres (the ends of the chromosomes) attach to the nuclear envelope, causing the chromosomes to form loops that resemble flower petals.

5. **Conclusion**: Therefore, the bouquet stage is observed in the **Leptotene** sub-stage of Prophase I.

---