As the cell grows and divides, it progresses through stages in the cell cycle. The eukaryotic cell cycle could be defined as a period from one cell division to the next one. It consists of four phases: G
1, S, G
2 and M, where “G” stands for gap, “S” — synthesis, and “M” — mitosis. During the gaps cell increases in size. After the division, cell may initiate a new round of division or can remain for a longer period in resting phase, G
0. Cell, after appropriate stimulation, can leave the G0 phase and re-enter the G1 phase (Fig. 7.1). In most mammals the cell cycle lasts 12-24 hours (without G0 phase). Bacteria divide much faster, for example E. coli — every 20-30 minutes (however, there is no typical cell cycle in bacteria).
Keywords
- Homologous Recombination
- Daughter Cell
- Sister Chromatid
- Homologous Chromosome
- loxP Site
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.