A double equatorial plate is formed in

Options

A. Metaphase I
B. Metaphase II
C. Mitotic Metaphase
D. Cytokinesis

Answer

To answer the question "A double equatorial plate is formed in", we need to analyze the options provided and understand the context of cell division, particularly focusing on meiosis and mitosis.

### Step-by-Step Solution:

1. **Understanding the Terms**:
- The term "double equatorial plate" refers to the arrangement of chromosomes at the equator of the cell during a specific phase of cell division.

2. **Types of Cell Division**:
- There are two main types of cell division:
- **Mitosis** (equational division)
- **Meiosis** (reductional division)

3. **Phases of Meiosis**:
- Meiosis consists of two rounds of division: Meiosis I and Meiosis II. Each of these has several phases:
- **Prophase I**
- **Metaphase I**
- **Anaphase I**
- **Telophase I**
- **Metaphase II**
- **Anaphase II**
- **Telophase II**

4. **Identifying the Formation of the Equatorial Plate**:
- During **Metaphase I** of meiosis, the chromosomes line up at the equatorial plane of the cell. This is where the term "double equatorial plate" comes into play, as the homologous chromosomes are arranged in pairs at the equator.

5. **Evaluating the Options**:
- **Option A: Metaphase I** - This is where the double equatorial plate is formed due to the alignment of homologous chromosomes.
- **Option B: Metaphase II** - This phase involves the alignment of sister chromatids, not homologous chromosomes, hence it does not form a double equatorial plate.
- **Option C: Mitotic Metaphase** - In mitosis, only one equatorial plate is formed, not a double one.
- **Option D: Cytokinesis** - This is the process of cytoplasmic division and does not involve the formation of an equatorial plate.

6. **Conclusion**:
- Based on the analysis, the correct answer is **Option A: Metaphase I**, where the double equatorial plate is formed.

### Final Answer:
A double equatorial plate is formed in **Metaphase I**.

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