22. Which is incorrect about pre-mRNA splicing?
(A) Pre-mRNAs contain introns and exons, and most of introns are longer than exons.
(B) Pre-mRNA splicing is catalyzed by the spliceosome, a large RNA-protein complex.
(C) Many non-coding RNAs are involved in pre-mRNA splicing.
(D) Pre-mRNAs are bound by spliceosome and transferred to cytosol for splicing.
(E) The various spliceosomal complexes during splicing cycle are demonstrated by cryoEM.
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