๐Ÿงฌap biology review

G1 Phase

Written by the Fiveable Content Team โ€ข Last updated August 2025
Verified for the 2027 exam
Verified for the 2027 examโ€ขWritten by the Fiveable Content Team โ€ข Last updated August 2025

Definition

The G1 phase is part of interphase within the cell cycle during which cellular content excluding chromosomes gets duplicated.

AP course connection

Topic 4.6: 4.6 Regulation of the Cell Cycle

Unit 4
2,589 studying โ†’