With regard to mature mRNA in eukaryotes
A. exons and introns do not appear in the mature RNA
B. exons appear but introns do not appear in the mature RNA
C. introns appear but exons do not appear in the mature RNA
D. both exons and introns appear in the mature RNA.
Answer:B
With regard to mature mRNA in eukaryotes
A. exons and introns do not appear in the mature RNA B. exons appear but introns do not appear in the mature RNA C. introns appear but exons do not appear in the mature RNA D. both exons and introns appear in the mature RNA.