In which phase do kinetochore-microtubule interactions move chromosomes to the midline?

In which phase do kinetochore-microtubule interactions move chromosomes to the midline?

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

Answer: (C)

During metaphase, kinetochore-microtubule interactions are crucial for the proper alignment of chromosomes at the cell's equatorial plane, known as the metaphase plate. In this phase, the chromosomes are lined up in the center of the cell, facilitated by the attachment of microtubules from the centrosomes to the kinetochores located at the centromeres of the chromosomes. This alignment is essential for ensuring that each daughter cell receives an identical set of chromosomes during cell division. The interactions between kinetochores and microtubules are dynamic, allowing the chromosomes to be correctly positioned in preparation for the next phase, which is anaphase. This ensures that when the sister chromatids separate and the microtubules begin to shorten, they can be pulled toward opposite poles of the cell effectively. The organization and stability of these microtubule attachments during metaphase are critical for maintaining genomic integrity and the proper distribution of genetic material.

During metaphase, kinetochore-microtubule interactions are crucial for the proper alignment of chromosomes at the cell's equatorial plane, known as the metaphase plate. In this phase, the chromosomes are lined up in the center of the cell, facilitated by the attachment of microtubules from the centrosomes to the kinetochores located at the centromeres of the chromosomes. This alignment is essential for ensuring that each daughter cell receives an identical set of chromosomes during cell division.

The interactions between kinetochores and microtubules are dynamic, allowing the chromosomes to be correctly positioned in preparation for the next phase, which is anaphase. This ensures that when the sister chromatids separate and the microtubules begin to shorten, they can be pulled toward opposite poles of the cell effectively. The organization and stability of these microtubule attachments during metaphase are critical for maintaining genomic integrity and the proper distribution of genetic material.