Multiple choice

The filamentous bacteriophage containing circular single-stranded DNA is

  1. phage f1

  2. phage M13

  3. phage G4

  4. phage P4

  5. phage P2
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

M13 is a filamentous bacteriophage composed of circular single-stranded DNA (ssDNA) which is 6407 nucleotides long encapsulated in approximately 2700 copies of the major coat protein P8 and capped with 5 copies of two different minor coat proteins (P9, P6, P3) on the ends.

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