Which of the following statements about RNA processing in eukaryotes is INCORRECT?
A. Introns are simply excised out of pre-mRNA to produce the mature mRNA.
B. A complex composed entirely of proteins is used to remove introns from the pre-mRNA.
C. A poly A tail is added on to the 3? end of the mRNA.
D. A 7-methylguanosine cap is added on to the 5? end of the mRNA.
E. Processing occurs in the nucleus.
A. Introns are simply excised out of pre-mRNA to produce the mature mRNA.
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