Which of the following RNA can only be traced inside the nucleus?

rRNA

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tRNA

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mRNA

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hnRNA

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Solution

The correct option is D hnRNA
Precursor mRNA (pre-mRNA), also termed heterogeneous nuclear RNA (hnRNA), is an immature single strand of messenger ribonucleic acid (mRNA). It is formed after transcription. It undergoes additional processing to form mRNA and is then transported out of the nucleus for translation. Hence hnRNA is only found inside the nucleus.

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