I have a simple question about cell function and cell cycle. The cell cycle alternates:
The cells which are not in the cycle are in G0 phase.
My question is: when do cells accomplish their functional purpose? (as a lymphocyte, a fibroblast, a neuron...)
Does it happen outside the cell cycle, i.e. during the G0 phase? Or is it during the interphase, between 2 mitoses?
I have these 2 scenarios in mind:
- Only stem cells are in cell cycles. The resulting daughter cells are differentiated. They accomplish their functional purpose but do not divide anymore.
- All cells are in cell cycles. They accomplish their functional purpose during the interphase.
Which one is right?
When does a cell accomplish its functional purpose?
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