Give an account of `G_0` phase.

Explanation

Some cells exit G and enters a quiescent stage called Go, where the cells remain metabolically active without proliferation. Cells can exist for long periods in Go phase. In Go cells cease growth with reduced rate of RNA and protein synthesis. The Go phase is not permanent. Mature neuron and skeletal muscle cell remain permanently in Go. Many cells in animals remains in Go unless called on to proliferate by appropriate growth factors or other extracellular signals. Go cells are not dormant.