Which series lists the correct order of steps of binary fission from first to last?

• A. Septum formation, DNA replication, chromosome segregation, cell separation
• B. DNA replication, chromosome segregation, septum formation, cell separation
• C. Chromosome segregation, DNA replication, septum formation, cell separation
• D. Cell separation, septum formation, DNA replication, chromosome segregation

Answer: (B)

Verified step by step guidance

1. Understand that binary fission is the process by which a bacterial cell divides into two identical daughter cells.
2. Identify the first step as DNA replication, where the bacterial chromosome is duplicated to ensure each daughter cell receives a copy.
3. Next, chromosome segregation occurs, which is the separation of the two replicated chromosomes to opposite ends of the cell.
4. Following segregation, septum formation begins, where a division septum (a new cell wall) starts to form between the two chromosomes.
5. Finally, cell separation happens, where the septum is completed and the two daughter cells physically separate from each other.