The ability of a cell to bind DNA on its surface and import it within cell is called
A. Generalized Transduction
B. Conjugation
C. Homologous Recombination
D. Specialized Transduction
E. Transformation
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Answer:
A.) Generalised transduction
Explanation:
Generalized transduction is the process by which any bacterial gene may be transferred to another bacterium via a bacteriophage, and typically carries only bacterial DNA and no viral DNA. In essence, this is the packaging of bacterial DNA into a viral envelope.
The key difference between generalized and specialized transduction is that generalized transduction is done by virulent bacteriophages in which bacterial cell is lysed when new bacteriophages are released while specialized transduction is done by temperate bacteriophages in which bacterial cell is not lysed.
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It is known as Generalized Transduction
- It happens naturally when a phage is bundled with random fragments of bacterial DNA.
- It ordinarily occurs during the lytic stage of a phage, when the viral DNA is gently wrapped into phage heads.
- The specific virus aims to progressively extend the head with genetic material if it multiplies through headful packaging.
- Viral packaging processes may include bacterial genetic material into the new bit if the viral genome results in spare capacity.
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