出典:Wikipedia
出典:『Wikipedia』 (2011/02/19 07:55 UTC 版)
The G1 phase is a period in the cell cycle during interphase, before the S phase. For many cells, this phase is the major period of cell growth during its lifespan. During this stage new organelles are being synthesized, so the cell requires both structural proteins and enzymes, resulting in great amount of protein synthesis and a high metabolic rate in the cell. G1 consists of four subphases: