Use This Model of a Eukaryotic Primary Transcript to Answer

Multiple Choice

Use this model of a eukaryotic primary transcript to answer the following question.
E = exon and I = intron
5′-UTR E1 I1 E2 I2 E3 I3 E4 UTR-3′
If the primary transcript is processed and transported to the cytosol, which of the following molecules best represents the mRNA that will be produced?

A) 5′-UTR I1 I2 I3 UTR-3′
B) 5′-E1 E2 E3 E4-3′
C) 5′-UTR E1 E2 E3 E4 UTR-3′
D) 5′-E1 I1 E2 I2 E3 I3 E4-3′