During metaphase, the chromosomes align themselves at the

Options

A. Periphery
B. Equator
C. Cell plate
D. Furrow

Answer

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

1. **Understanding Metaphase**: Metaphase is the second stage of the mitotic phase (M phase) in cell division. It follows prophase and precedes anaphase.

2. **Chromosome Alignment**: During metaphase, chromosomes become highly condensed and are aligned in the center of the cell. This alignment is crucial for the proper separation of sister chromatids.

3. **Formation of the Metaphase Plate**: The chromosomes align along an imaginary line called the metaphase plate. This plate is located at the equator of the cell.

4. **Role of Spindle Fibers**: Spindle fibers, which are structures that emerge from the centrosomes, attach to the kinetochores of the chromosomes. The kinetochores are located at the centromeres, where the two sister chromatids are held together.

5. **Equatorial Position**: The metaphase plate is specifically positioned at the equator of the cell, not at the periphery. This positioning ensures that when the spindle fibers contract during anaphase, the sister chromatids are pulled apart evenly to opposite poles of the cell.

6. **Conclusion**: Therefore, during metaphase, the chromosomes align themselves at the equator of the cell.

**Final Answer**: During metaphase, the chromosomes align themselves at the **equator**.

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