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A-Level Biology OCR A

Ensures Cell Role Outline Checkpoints Control Cycle Divides

Cell cycle checkpoints ensure proper cell size, error-free DNA replication, and correct chromosome alignment for accurate cell division.

Cell cycle checkpoints ensure cells divide at the correct size, with error-free DNA, and correctly positioned chromosomes, ensuring the fidelity of cell division.

Front Outline the role of checkpoints to control the cell cycle.
Back Role of checkpoints:
  • Ensures that a cell only divides when it has grown to the right size
  • Ensures that the replicated DNA is error free
  • Ensures that chromosomes are in correct positions during mitosis
Summary: ensures fidelity of cell division (that two identical daughter cells are created from the parent cell)

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