Tuesday 31 January 2017

Confusion about the duration of different phases of the cell cycle such as G1, G2 & S


We all know that normally most of our cells (which are alive and have nuclei - except for cells such as "stem cells", "red blood cells", etc) spend most of their lives in interphase.


But the Interphase itself is also composed of other parts, other stages, including G1, S, and G2.


Is the staying duration of the most human cells in each stage(G1,G2 & S) is comparable to the other stage?


For example, is it true to say that:



"Most human cells, which have the ability to divide(passing the cell cycle), spend most of their lives on stage G1 than S phase or vice versa."?



Usually, which stage is the longest or shortest?



It is quite clear that the G1 is normally longer that G2 and as far as I know the G2 is the shortest stage in interphase, but what about G1 and S?


Is stage S usually longer than G1?


Is there any information?




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