An mRNA that is readily transported into cytoplasm should have all of the following EXCEPT
a. exons
b. a poly-A tail
c. a 5’-cap
d. introns

Explanation:

In eukaryotic cells, pre-mRNA has to undergo 3 stages of RNA processing before being transported into the cytosol. Specifically during RNA Splicing, small nuclear RNAs (snRNAs), small nuclear ribonucleoproteins (snRNPs) and other proteins form a spliceosome which excises introns and splice together exons. Introns are considered junk material and does not stay with the mRNA.

The answer is Introns. (D)

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