Question
Some cells do not have gap phase in their cell cycle whereas some cells spend maximum part of their life in gap phase. Search for such cells. Some cells are said to be in $G0$ phase. What is this $G0$ phase?

Answer

  1. $G_0$ is the phase of the cell cycle in eukaryotes in which many cell types stop dividing. It is also called a quiescent stage.
  2. If cells are deprived of appropriate growth factors, they stop at the Gi checkpoint of the cell cycle. Their growth and division are arrested and they remain in $G_0$ phase.
  3. Mature neurons and muscle cells remain in $G_0$ phase.

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