During which stage of mitosis do chromosomes line up across the center (equatorial plane) of the cell?

• A. Telophase
• B. Metaphase
• C. Prophase
• D. Anaphase

Answer: (B)

Verified step by step guidance

1. Recall the main stages of mitosis: Prophase, Metaphase, Anaphase, and Telophase.
2. Understand that during Prophase, chromosomes condense and become visible, but they have not yet aligned in the center of the cell.
3. Recognize that Metaphase is characterized by chromosomes lining up along the equatorial plane (the middle) of the cell, preparing for separation.
4. Know that during Anaphase, sister chromatids are pulled apart toward opposite poles of the cell.
5. Remember that Telophase involves the chromosomes reaching the poles and the cell beginning to divide, with the nuclear envelope reforming.