Definition: The period of the CELL CYCLE preceding DNA REPLICATION in S PHASE. Subphases of G1 include "competence" (to respond to growth factors), G1a (entry into G1), G1b (progression), and G1c (assembly). Progression through the G1 subphases is effected by limiting growth factors, nutrients, or inhibitors.
Other names Phases, G1b; Phases, G1a; Phases, G1; Phases, First Gap; Phase, G1b; Phase, G1a; Phase, G1; Phase, First Gap; Phase 1, Gap; Gap Phases, First; Gap Phase, First; G1b Phases; G1a Phases; G1 Phases; First Gap Phases; 1, Gap Phase; Gap Phase 1; G1b Phase; G1a Phase; First Gap Phase
