Prophase of reduction division is divided into number of stages. The correct chronological sequence is

Options

A. Zygotene, Leptotene, Pachytene, Diakinesis and Diplotene
B. Leptotene, Zygotene, Pachytene, Diplotene and Diakinesis
C. Leptotene, Pachytene, Zygotene, Diakinesis and Diplotene
D. Diplotene, Diakinesis, Pachytene, Zygotene and Leptotene.

Answer

To solve the question regarding the chronological sequence of stages in prophase of reduction division (meiosis), we will follow these steps:

### Step-by-Step Solution:

1. **Understand the Stages of Prophase**: Prophase of meiosis is divided into several stages, which are crucial for the process of reduction division. The stages are:
- Leptotene
- Zygotene
- Pachytene
- Diplotene
- Diakinesis

2. **Identify the Correct Sequence**: The correct chronological sequence of these stages is:
- **Leptotene**: This is the first stage where chromosomes start to condense and become visible.
- **Zygotene**: In this stage, homologous chromosomes begin to pair up (synapsis).
- **Pachytene**: This is where crossing over occurs between homologous chromosomes, leading to genetic variation.
- **Diplotene**: Here, the homologous chromosomes start to separate but remain connected at the chiasmata (points of crossing over).
- **Diakinesis**: This is the final stage of prophase where the chromosomes condense further and the nuclear envelope breaks down.

3. **Evaluate the Options**: Now, we will evaluate the provided options to find the one that matches the correct sequence:
- Option 1: Zygotene, Leptotene, Pachytene (Incorrect)
- Option 2: Leptotene, Zygotene, Pachytene, Diplotene, Diakinesis (Correct)
- Option 3: Leptotene, Pachytene, Zygotene, Diakinesis, Diplotene (Incorrect)
- Option 4: Diplotene, Diakinesis, Pachytene, Leptotene (Incorrect)

4. **Conclusion**: Based on the analysis, the correct chronological sequence of prophase stages in reduction division is given in **Option 2**: Leptotene, Zygotene, Pachytene, Diplotene, Diakinesis.

### Final Answer:
The correct chronological sequence of prophase stages in reduction division is:
**Leptotene, Zygotene, Pachytene, Diplotene, Diakinesis** (Option 2).