G1 phase

S phase

G2 phase

M phase

Cytokinesis

Spindle formation

DNA replication

Chromosome condensation

28

14

7

21

Interphase

Telophase

Prophase

Anaphase

exit the cell cycle

enter the cell cycle

suspend the cell cycle

terminate the cell cycle

${G_1}phase$

${G_2}phase$

S phase

${G_0}phase$

A- G1, B- S, C- G2

A- G2, B- S, C- G1

A- G1, B- G2, C- S

A- S, B- G1, C- G2

${G_1}$-phase, M-phase and ${G_2}$-phase

M-phase, S-phase and divisional phase

Gap 1 phase, synthesis phase and gap 2 phase

M-phase ${G_2}$-phase and divisional phase

${G_0}$

${G_1}$

$S$

${G_2}$

The G1 checkpoint ensures the cell is ready to proceed to DNA replication.

DNA replication occurs during the G2 phase of interphase.

Mitosis includes the stages of prophase, metaphase, anaphase, and telophase.

Cells can exit the cell cycle and enter a non-dividing state called G0.

A cell in ${G_1}$ phase has double the amount of DNA than a cell in ${G_2}$

Each chromosome has two chromosome has two chromatids in ${G_1}$ phase

Nerve cells in adult human are in ${G_0}$ state

DNA content of cell remains constant during entire cell cycle