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Prophage is viral genome (a) Freshly sy...

Prophage is viral genome
(a) Freshly synthesised
(b) Inoculated to a bacterium
(c) Outside the host cell
(d) Incorporated and integrated to host genome

A

Freshly synthesised

B

Inoculated to a bacterium

C

Outside the host cell

D

Incorporated and integrated to host genome

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding what a prophage is, we need to analyze the options provided and understand the definition of a prophage. ### Step-by-Step Solution: 1. **Understanding Prophage**: A prophage is a specific term used to describe the viral genome of a bacteriophage that has been integrated into the bacterial chromosome. This occurs during the lysogenic cycle of the bacteriophage. 2. **Evaluating the Options**: - **(a) Freshly synthesised**: This option suggests that the prophage is a newly made viral genome. However, a prophage is not newly synthesized; it is already integrated into the host's DNA. - **(b) Inoculated to a bacterium**: This option implies that the prophage is simply introduced to a bacterium. While bacteriophages can infect bacteria, a prophage specifically refers to the viral genome that is integrated into the bacterial genome, not just inoculated. - **(c) Outside the host cell**: This option indicates that the prophage exists outside the bacterial cell. However, a prophage is defined as being part of the bacterial genome, thus it cannot be outside the host cell. - **(d) Incorporated and integrated to host genome**: This option accurately describes a prophage. It is indeed the viral genome that has been incorporated and integrated into the host bacterial genome. 3. **Conclusion**: Based on the definitions and analysis of the options, the correct answer is (d) Incorporated and integrated to host genome. ### Final Answer: **(d) Incorporated and integrated to host genome** ---
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