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
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
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Answer: B. Exons appear but introns do not appear in the mature RNA. During eukaryotic mRNA maturation, the introns are removed, leaving only the exons, which code for the protein's amino acid sequence. This mature mRNA is then used by the ribosome to produce an amino acid sequence and the resulting protein.
