Cellular communication is super important for controlling how genes work during development. It happens through complex signaling pathways that help cells understand the messages they get.

Key Impacts:

1. Cell Communication: Cells send messages to each other using signals like hormones, helping guide how they develop.
2. Gene Control: These signals can turn genes on or off. This affects how cells act and what they do.

Example:

In the early stages of development, fibroblast growth factors (FGFs) send signals that activate genes. These genes are important for making limbs. This shows how signaling shapes the body's structure by controlling gene expression. This back-and-forth communication is vital for healthy development.