Which statement is correct for bacterial transduction ? [2002]a)Transfer of some genes from one bacteria to another bacteria through virusb)Transfer of genes from one bacteria to another bacteria by conjugationc)Bacteria obtained its DNA directlyd)Bacteria obtained DNA from other external sourceCorrect answer is option 'A'. Can you explain this answer?

Question

Answer

Actually, transduction is the process of genetic recombination in bacteria.
In this the genes from the host cell are incorporated into the bacterial virus known as bacteriophage.

Answer

Answer

Generalized transduction vs Specialized Transduction

https://edurev.in/studytube/Generalized-transduction-vs-Specialized-Transduction/e0a1af30-3c42-45e2-ab53-4092ede74b94_v?courseId=-1

Answer

Opt. A

Answer

Transfer of some genes from one bacteria to another bacteria through a virus is the correct statement for bacterial transduction.

Explanation:

Bacterial transduction is a process by which bacteria can transfer genetic material from one bacterium to another using bacteriophages (viruses that infect bacteria) as a vector. It is one of the three main mechanisms of horizontal gene transfer in bacteria, the other two being conjugation and transformation.

Bacterial transduction involves the following steps:

1. Infection: The process begins when a bacteriophage infects a bacterial cell. The bacteriophage attaches to specific receptors on the bacterial cell surface and injects its genetic material into the cell.

2. Replication: Once inside the bacterial cell, the phage genetic material takes over the cell's machinery and directs it to produce more copies of the phage DNA and proteins.

3. Packaging: During the replication process, some of the phage DNA and proteins may accidentally package bacterial DNA instead of phage DNA. This can occur due to errors in the packaging process or when the bacterial DNA is located near the phage DNA.

4. Transduction: When the newly formed phages are released from the infected bacterial cell, they can carry the bacterial DNA that was mistakenly packaged inside them. These phages, now carrying bacterial genes, can infect other bacteria and transfer the bacterial DNA to the recipient cells.

5. Integration: Once the bacterial DNA is transferred to the recipient bacterial cell, it can be integrated into the recipient cell's genome through recombination. This transferred DNA can then be expressed and inherited by subsequent generations of bacteria.

In summary, bacterial transduction is the transfer of some genes from one bacterium to another bacterium through a virus (bacteriophage). The bacteriophage acts as a vector, accidentally packaging and transferring bacterial DNA during the viral replication process. This process allows for horizontal gene transfer between bacteria and contributes to the genetic diversity and evolution of bacterial populations.

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