General Biology I

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G2 of Interphase

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General Biology I

Definition

G2 of Interphase is the final sub-phase of Interphase where the cell undergoes rapid growth and prepares for mitosis. It involves the synthesis of proteins and organelles needed for cell division.

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5 Must Know Facts For Your Next Test

  1. G2 phase follows the S phase, where DNA replication occurs.
  2. During G2, the cell checks for DNA damage and ensures all proteins necessary for mitosis are present.
  3. The G2/M checkpoint is critical for preventing cells with damaged DNA from entering mitosis.
  4. Cyclin-dependent kinases (CDKs) and cyclins are crucial regulators in this phase.
  5. Completion of G2 results in entry into prophase of mitosis.

Review Questions

  • What major events occur during the G2 phase?
  • Why is the G2/M checkpoint important?
  • Which molecules regulate progression through the G2 phase?

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