G1 phase - Wikipedia
The G1 phase, gap 1 phase, or growth 1 phase, is the first of four phases of the cell cycle that takes place in eukaryotic cell division. In this part of interphase, the cell synthesizes mRNA …
What Happens in the G Phases of the Cell Cycle?
Nov 14, 2025 · The G1 phase, or first gap, begins immediately after a cell divides and is often the longest and most variable stage of the cell cycle. During this time, the cell focuses on growth …
What Is the G1 Phase of the Cell Cycle? - Biology Insights
G1, often referred to as the “first gap” phase, immediately follows cell division and precedes the S phase, where DNA replication occurs. During this time, the cell is metabolically active, …
G1 Phase Explained: Definition, Examples, Practice & Video Lessons
The G1 phase is a critical growth stage in the cell cycle that occurs after interphase but before DNA replication in the S phase. During this phase, the cell grows in size, produces RNA, …
Cell cycle | Description, Stages, & Checkpoints | Britannica
Dec 4, 2025 · Checkpoints at the end of G1 and at the beginning of G2 are designed to assess DNA for damage before and after S phase. Likewise, a checkpoint during mitosis ensures that …
The Cell Cycle - Phases - Regulation - TeachMePhysiology
Jun 8, 2025 · The cell cycle is a 4-stage process consisting of Gap 1 (G1), synthesis (S), Gap 2 (G2), and mitosis (M), which a cell undergoes as it grows and divides. After completing the …
G1 phase Definition - General Biology I Key Term | Fiveable
Definition The G1 phase, or Gap 1 phase, is the first stage of interphase in the cell cycle, where the cell grows, carries out normal functions, and prepares for DNA replication. During this …
Phases of the cell cycle (article) | Khan Academy
The cell cycle is composed of interphase (G₁, S, and G₂ phases), followed by the mitotic phase (mitosis and cytokinesis), and G₀ phase.
The Cell Cycle – Introductory Biology: Evolutionary and Ecological ...
The G 1 checkpoint, also called the restriction point, is the point at which the cell irreversibly commits to the cell-division process. In addition to adequate reserves and cell size, there is a …
The Ultimate Guide to G1 Phase in Cell Cycle
Jun 9, 2025 · The G1 phase, also known as the Gap 1 phase, is the first stage of the cell cycle, during which the cell grows, replicates its organelles, and prepares for DNA replication.