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A bacteriophage can be an important part of the genetic engineering process. Determine which of the following structures is not part of a bacteriophage.
A. Injection tube
B. Plasmid ring
C. Genetic material
D. Protein coat

Answer :

A bacteriophage does not contain a plasmid ring.

What is a bacteriophage?

  • A bacteriophage or phage is a virus which infects bacteria and replicates inside it.
  • They destroy the host cell in which they infect.
  • A bacteriophage consists of nucleic acid molecule (genetic material) surrounded by a protein coat or capsid.
  • The genetic material in bacteriophage can be DNA or RNA which may be circular or linear, single or double stranded.
  • Bacteriophage is formed of a head and a tail. Head consist of nucleic acid and protein coat.
  • Tail consists of collar, base plate, sheath, tail fibers.
  • The tail fibers attach to the host and inject tail tube to release genetic material into the host.
  • A plasmid is an extrachromosomal genetic material of bacterial cell.

Learn more about bacteriophage here:

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