During binary fission of bacteria, the mode of cell division is

Options

A. Mitosis
B. Amitosis
C. Meiosis
D. Both (A) & (B)

Answer

To answer the question regarding the mode of cell division during binary fission of bacteria, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Binary Fission**:
- Binary fission is a method of asexual reproduction commonly found in prokaryotic organisms like bacteria. It involves the division of a single cell into two identical daughter cells.

2. **Cell Division Process**:
- In binary fission, the process begins with the replication of the bacterial DNA. The single circular chromosome is copied, and the two copies attach to different parts of the cell membrane.

3. **Cleavage of the Cell**:
- As the cell grows, it elongates, and the cell membrane begins to pinch inward at the center, leading to the formation of a septum. This process is referred to as simple cleavage.

4. **Nuclear Division**:
- The division of the nucleus (or nucleoid in bacteria) occurs simultaneously with the division of the cytoplasm. This division does not involve the formation of a spindle apparatus or the appearance of chromosomes, which are typical in eukaryotic cell division.

5. **Cytoplasmic Division**:
- The cytoplasm divides without the complex processes seen in mitosis. This straightforward division is characteristic of prokaryotic cells.

6. **Type of Division**:
- Since there is no spindle formation and no distinct chromosomal appearance, the type of division that occurs in binary fission is termed "Amytosis."

7. **Conclusion**:
- Therefore, the mode of cell division during binary fission of bacteria is called Amytosis.

### Final Answer:
The mode of cell division during binary fission of bacteria is Amytosis.

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