Question

Lytic bacteriophage A) have two lifestyles, they either lyse the bacterial cell they infect or insert their DNA into the host genome and become a prophage B) have one lifestyle, upon infection they express genes to produce more phage and lyse the host cell C) have one lifestyle, upon infection they insert their DNA into the host genome and become a prophage D) have two lifestyles, one in which they lyse the cell immediately after infection and one in which they infect the host cell but postpone lysis until environmental conditions are more favorable

B) The phage was temperate, and it was induced to go into the lytic cycle between the first and second streaks.

C) Duke did not use careful sterile technique during the second streak.

D) The first streak plate had more than one phage species present, Duke purified a phage with a smaller plaque size in the second streak

Answer 1

Answer: Option C is correct.
Explanation:
Virulent phages have a single lifestyle i.e. lytic cycle.
They infect the cell and cause its lysis.
Avirulent phages infect the cell and become prophages. They become latent and enter into the lytic cycle when conditions are appropriate.