EVERYDAY SCIENCE

Detailed explanation-1: -To do this, it then moves into the S phase where the cell copies all the DNA. So, S stands for DNA synthesis.

Detailed explanation-2: -S phase. In S phase, the cell synthesizes a complete copy of the DNA in its nucleus. It also duplicates a microtubule-organizing structure called the centrosome. The centrosomes help separate DNA during M phase.

Detailed explanation-3: -Interphase. G1, S and G2 phases are all cumulatively referred to as interphase involving the growth of a cell and the replication of its DNA. Initially in G1 phase, the cell grows physically and increases the volume of both protein and organelles.

Detailed explanation-4: -Interphase is divided into the first growth (G1), Synthesis (S), and the second growth (G2) phases (figure 1). The growth phases are, as you may have suspected, for the growth of the cell, during the synthesis phase the DNA replication occurs in preparation for the second growth phase.

Detailed explanation-5: -Hence the correct sequence of phases of cell cycle is: G1 → S → G2 → M.