During which stage of mitosis do the chromosomes line up in the middle of the cell?

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

Answer: (A)

Verified step by step guidance

1. Understand the stages of mitosis: Mitosis is divided into several stages: prophase, metaphase, anaphase, and telophase. Each stage has distinct characteristics and functions.
2. Identify the key event of metaphase: During metaphase, chromosomes align at the metaphase plate, which is the equatorial plane of the cell. This alignment is crucial for the equal distribution of chromosomes to the daughter cells.
3. Compare metaphase with other stages: In prophase, chromosomes condense and become visible, but they do not line up in the middle. In anaphase, sister chromatids are pulled apart to opposite poles. In telophase, the chromosomes reach the poles and begin to de-condense.
4. Recognize the importance of chromosome alignment: The alignment of chromosomes during metaphase ensures that each daughter cell receives an identical set of chromosomes, which is essential for genetic consistency.
5. Conclude that metaphase is the stage where chromosomes line up in the middle of the cell, distinguishing it from the other stages of mitosis.