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G1 Checkpoint in AP Biology

Written by the Fiveable Content Team
Verified for the 2027 exam
Verified for the 2027 exam•Written by the Fiveable Content Team

Definition

This checkpoint occurs in the G1 phase of the cell cycle and checks for conditions favorable for DNA replication, including sufficient energy resources, nutrients, and absence of DNA damage.

AP course connection

Regulation of the Cell Cycle Review

Unit 4

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