Question

Give graphic representation of cell cycle.

Answer 1

Cell cycle:

The cell cycle is a cycle of stages that cells pass through to allow them to divide and produce new cells.

The graphic shows a visual representation of the cell cycle. The small section labelled “M” represents mitosis, while interphase is shown subdivided into its major components: the G1, S, and G2 phases.

• G1 phase. Metabolic changes prepare the cell for division. At a certain point - the restriction point - the cell is committed to division and moves into the S phase.
  
• S phase. DNA synthesis replicates the genetic material. Each chromosome now consists of two sister chromatids.
  
• G2 phase. Metabolic changes assemble the cytoplasmic materials necessary for mitosis and cytokinesis.
  
• M phase. A nuclear division (mitosis) followed by a cell division (cytokinesis).
  

The period between mitotic divisions - that is, G1, S and G2 - is known as interphase.