試題詳解

3. The exons of nuclear pre-mRNA have to be removed for mature mRNA synthesis. Which is incorrect?
(A) One transesterification reaction results in splicing of exons in pro-mRNA.
(B) The spliceosome is a snRNAs complex to catalyze the exon removals without ATP.
(C) The splicing is preformed after thtranscription termination.
(D) Only 1% of human genes undergo alternative splicing to yield different mRNAs that encode distinct proteins.
(E) SR proteins contribute to exon definition.