During binary fission in a bacterium, which of the following occurs?

• A. The bacterial cell duplicates its DNA and divides into two genetically identical daughter cells.
• B. The bacterium forms spores to survive unfavorable conditions.
• C. The bacterial cell fuses with another cell to exchange genetic material.
• D. The bacterium undergoes meiosis to produce four haploid cells.

Answer: (A)

Verified step by step guidance

1. Understand that binary fission is the primary method of reproduction in bacteria, which are prokaryotic organisms.
2. Recall that during binary fission, the bacterial cell first duplicates its DNA to ensure each daughter cell receives an identical copy.
3. Recognize that after DNA replication, the cell elongates and the plasma membrane pinches inward, dividing the cytoplasm.
4. Note that this process results in two genetically identical daughter cells, each containing a complete copy of the original DNA.
5. Differentiate binary fission from other processes such as spore formation, genetic exchange (conjugation), and meiosis, which are not part of binary fission.