Which of the following correctly related with given diagram?
(i) Sequence of cell cycle = G1 – S – G2 – M phase
(ii) A cell exits G1 phase to enter an inactive state – Quiescent or G0
(iii) G1 phase is the interval between mitosis and initiation of DNA replication
(iv) In G1 phase DNA synthesis occurs
DNA synthesis occurs in S phase. G1 phase is the interval between mitosis and initiation of DNA replication. Cells exit in G1 stage and enter into inactive stage called G0 stage. The various stages in a sequence in a cell cycle are G1, S, G2 and M stages.