- A Initiating new rounds of DNA replication at origins
- B Chromosome segregation error correction at kinetochores
- C Assembling the bipolar mitotic spindle apparatus
- D Triggering breakdown of the nuclear envelope
Correct answer: B. Chromosome segregation error correction at kinetochores
Explanation: Aurora B kinase is part of the chromosomal passenger complex (CPC). It corrects erroneous kinetochore-microtubule attachments (e.g., merotelic) to prevent mis-segregation.
Concept context
Mitosis and meiosis: how cells divide for growth, repair, and reproduction.