Question

The viral DNA of the temperate phage, instead of taking over the functions of the cell's genes, is incorporated into the host DNA and becomes a prophage in the bacterial chromosome, acting as a gene. This happens in
A.lysogeny
B. spontaneous induction
C. lytic phase
D. none of these

Answer 1

The viral DNA of the temperate phage, instead of taking over the functions of the cell's genes, is incorporated into the host DNA and becomes a prophage in the bacterial chromosome, acting as a gene. This happens in lysogeny(option a)

Answer 2

The answer is Option A. lysogeny

• A bacteriophage prolongs its lifecycle using two ways, ie. Lytic cycle and lysogenic cycle.
• The lysogenic cycle is also called the Guest-host cycle. Where the bacteria acts as the host and the phage or the virus acts as the guest.
• In the lysogenic cycle the phage genome can undergo replication, without destroying the host bacteria.
• This occurs in three steps: attachment, penetration and integration.
• In the attachment step, the bacteriophage attaches itself to the host bacteria.
• In the penetration step, the bacteriophages release their genomic content into the genome of the host bacteria where it gets integrated, which is called the integration.
• This viral DNA which is attached to the bacterial DNA is called the prophage.
• Prophage can reproduce many phages that can cause lysis of the host cell.

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