What are the steps common to C3 and C4 cycle ?

Steps common to C3 and C4 cycle are :

1. Photolysis of water in light reaction is common to both C3 and C4 cycle.

2. In both, dark reaction occurs in stroma region of chloroplast.

3. Calvin cycle results in the formation of starch in both the types of plants.

4. Both undergo phases of carboxylation and regeneration of RUBP during dark reaction.