Q12 / 160 · JIPMER 2014 · Botany

Viroids have

  • Correct answer
    A
    ssRNA not enclosed by protein coat
  • B
    ssDNA not enclosed by protein coat
  • C
    dsDNA enclosed by protein coat
  • D
    dsRNA enclosed by protein coat

Solution

Viroids are small, single stranded, circular RNA molecules not enclosed by protein coat. They were discovered byT O Diener in 1971. Viroid replication requires host encoded RNA polymerase.

Hence, the correct answer is option: 'A'.

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