Question
What is Go (quiescent phase) of cell cycle?

Answer

$\mathrm{G}_0$ phase is the phase of inactivation of cell cycle due to non-availability of mitogens and energy rich compounds. Cells in this stage remain metabolically active but no longer proliferate i.e., do not grow or differentiate unless called on to do so depending on the requirement of the organism. E.g., Nerve and heart cells of chordates are in permanent $\mathrm{G}_0$ phase.

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