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Which of the following is an incorrect statement about m-RNA?

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Which of the following is an incorrect statement about m-RNA?

(a) Cap is added to the 5’ end

(b) Introns are removed and exons are spliced together

(c) Histone mRNAs lack 5’ cap

(d) Poly-A tail is added to the 3’ end

I got this question during an internship interview.

This key question is from RNA Processing topic in portion DNA, RNA and Protein Metabolism of Biochemistry

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Right option is (b) Introns are removed and exons are spliced together

The best I can explain: Introns are removed and exons are ligated.

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