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All mRNA precursors are synthesized by ___________________

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All mRNA precursors are synthesized by ___________________

(a) RNA polymerase I

(b) RNA polymerase II

(c) RNA polymerase III

(d) RNA polymerase IV

I have been asked this question in an online quiz.

This is a very interesting question from Gene Expression in portion Gene Expression of Cell Biology

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The correct choice is (b) RNA polymerase II

The explanation is: All eukaryotic mRNA precursors are synthesized by RNA polymerase II, it is conserved from yeast to mammals.

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