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STD 12 - 5. molecular basis of inheritance — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYSTD 12 - 5. molecular basis of inheritance1 Mark
MCQ
In eukaryotes, $mRNA$ is synthesized with the aid of
  • A
    $RNA polymerase III.$
  • ✓
    $RNA polmerase II.$
  • C
    $RNA polymerase I.$
  • D
    $reverse transcriptase.$
✓

Answer

Correct option: B.
$RNA polmerase II.$
b
In eukaryotes, $RNA$ polymerase are of $3$ types: $(i) RNA$ polymerase $I$ : Transcribes$ rRNA$ $(285 S, 18 S, 5.8 S) .1 t$ is found in nucleolus. found in nucleoplasm. $(iii)$ RNA polymerase. $III$ : Transcribes $tRNA$, $5 S rRNA$ and $SnRNA$ (small nuclear $RNAs$). It is found in nucleoplasm.

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