Answer:
S-Phase of the cell cycle
Step-by-step explanation:
All the cells send chemical signals during the S phase of the cell division. Basically in this phase of cell cycle, the cell synthesizes and replicates DNA. It is the phase that occurs during the inter phase of the cell cycle just before the mitosis or meiosis.
The cell in the s phase communicates this to its neighboring cells in order to prepare them too for cell division.