Astrand of recently transcribed mRNA contains the following components: intron (1), intron (2), exon (3), intron (4), exon (5), exon (6), exon (7), intron (8). Which sequence is expected to appear in the mature mRNA?
A)1, 2, 3, 4, 5, 6, 7, 8
B)2, 3, 4, 5, 6, 7
C)1, 2, 4, 8
D)3, 5, 6, 7

Question

Quizplus · Accepted Answer

Converting the early transcript of mRNA into mature mRNA requires splicing out the introns, which are the intervening sequences that are not part of the gene encoding for a specific protein. Only the exons (expressed regions) of the initial transcript should remain in the mature messenger RNA ready for translation.

Astrand of Recently Transcribed MRNA Contains the Following Components: Intron