During RNA splicing, introns are removed from pre-mRNA.

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Multiple Choice

During RNA splicing, introns are removed from pre-mRNA.

Explanation:
RNA splicing specifically removes introns, the noncoding segments, from the nascent pre-mRNA and stitches the remaining exons together to form a continuous coding sequence in mature mRNA. This mature transcript is what gets translated into protein, so introns are not present or translated in the final mRNA. The idea that introns are kept or joined to the mRNA, or that they are translated, doesn’t fit how splicing works.

RNA splicing specifically removes introns, the noncoding segments, from the nascent pre-mRNA and stitches the remaining exons together to form a continuous coding sequence in mature mRNA. This mature transcript is what gets translated into protein, so introns are not present or translated in the final mRNA. The idea that introns are kept or joined to the mRNA, or that they are translated, doesn’t fit how splicing works.

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