If an exon is not supposed to be included in the mature mRNA,it must be excised.With what other RNA sequences is it excised?
A)the flanking exons
B)the flanking introns
C)one flanking exon and one flanking intron
D)the promoter
E)the poly(A)sequence

Question

Quizplus · Accepted Answer

Exons are excised along with the flanking introns during RNA splicing. This is achieved by the spliceosome complex, which recognizes specific RNA sequences at the intron-exon boundaries and removes the introns, leaving only the exons to be joined together to form the mature mRNA. Therefore, choice B, which refers to the flanking introns, is the most appropriate answer.

If an Exon Is Not Supposed to Be Included in the Mature