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🔬 Biology  ·  Cell Cycle and Cell Division  ·  NEET

Which kinase phosphorylates histone H3 at Serine 10 during mitosis?

  • A CDK1
  • B Aurora B kinase
  • C Polo-like kinase 1
  • D ATM kinase

Correct answer: B. Aurora B kinase

Explanation: Aurora B kinase phosphorylates histone H3 at Ser10 during mitosis. This is a widely used marker for cells in mitosis in immunofluorescence.

Concept context

Mitosis and meiosis: how cells divide for growth, repair, and reproduction.

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