Bivalents align on the equatorial plate during

Options

A. Metaphase
B. Metaphase-I
C. Metaphase-II
D. 2 and 3

Answer

To answer the question "Bivalents align on the equatorial plate during," we need to identify the correct stage of cell division where this alignment occurs. Here’s a step-by-step solution:

### Step 1: Understand the Terms
- **Bivalents**: These are pairs of homologous chromosomes that come together during meiosis.
- **Equatorial Plate**: This is the imaginary line in the middle of the cell where chromosomes align during cell division.

### Step 2: Identify the Stages of Cell Division
- **Mitosis**: A type of cell division that results in two identical daughter cells.
- **Meiosis**: A type of cell division that reduces the chromosome number by half, resulting in four non-identical daughter cells.

### Step 3: Focus on Meiosis
In meiosis, there are two stages where alignment occurs:
- **Metaphase I**: Bivalents align at the equatorial plate.
- **Metaphase II**: Individual chromosomes align at the equatorial plate.

### Step 4: Determine the Correct Answer
The question specifically asks about the alignment of bivalents, which occurs during **Metaphase I** of meiosis. Therefore, the correct answer is:
- **Metaphase I**

### Conclusion
Bivalents align on the equatorial plate during Metaphase I.

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