Here's a breakdown:

1. DNA Replication: The circular bacterial chromosome replicates, creating two identical copies.

2. Separation: The two DNA copies move to opposite ends of the cell.

3. Cell Elongation: The cell begins to elongate, separating the two DNA molecules.

4. Cell Wall Formation: A new cell wall forms between the two DNA molecules, dividing the cell into two identical daughter cells.

So, the first stage is all about making sure the DNA is ready for the cell to divide into two.