Question

Bacteriophages contain

• A. ss DNA
• B. ds DNA
• C. ss RNA
• D. ds RNA

Answer 1

The correct option is B ds DNA

Bacteriophages are double-stranded DNA virus that infects bacteria.

T4 bacteriophage infects Escherichia coli. Infection is usually followed by the incorporation of phage DNA into the host cell genome as a prophage (lysogeny). Subsequently, the prophage is activated and phage proteins and DNA are synthesised by the host. So, the correct option is b.