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Shine-Dalgarno sequence is present in the ____________________

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Shine-Dalgarno sequence is present in the ____________________

(a) hnRNA

(b) mRNA

(c) tRNA

(d) siRNA

This question was posed to me by my college professor while I was bunking the class.

The doubt is from Gene Expression in section Gene Expression of Cell Biology

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The correct choice is (b) mRNA

To elaborate: The Shine-Dalgarno sequence is present 5-10 nucleotides upstream of the initiation codon in the bacterial mRNA. The 16S ribosomal RNA has a complementary sequence for it which leads to the binding of 30S small ribosomal subunit on the mRNA strand.

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