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For a cell to pass the G2 checkpoint, there must be accurate and complete DNA replication. There must also be a maturation promoting factor which helps to maintain the metaphase II stage arrest . The G2 also known as 2nd Gap phase, is usually responsible for continued growth and preparation for cell division. 
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For a cell to pass the G2 checkpoint, the integrity of the chromosome must be intact.

Cell cycle checkpoints

There are 3 checkpoints in the cell cycle:

  • G1 checkpoint
  • G2 chekpoint
  • M checkpoint

The G2 checkpoint is the penultimate checkpoint to mitosis.

The integrity of the chromosome and the DNA, in general, is checked and ascertained before the cell is passed fit to proceed to mitosis. without this, repairs must be made before mitosis can begin.

More on the cell cycle can be found here: https://brainly.com/question/25282664

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