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The length of tRNA molecules is ________________ nucleotides.

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The length of tRNA molecules is ________________ nucleotides.

(a) 20-30

(b) 50-70

(c) 73-93

(d) 83-93

The question was asked during an interview for a job.

This intriguing question comes from Gene Expression topic in chapter Gene Expression of Cell Biology

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The correct choice is (c) 73-93

To explain I would say: All the transfer RNA molecules are roughly the same length i.e. between 73 to 93 nucleotides. All the tRNAs also have a significant percentage of posttranscriptionally modified bases.

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