When Studying a Plant's Protein Production, a Scientist Found Two

Multiple Choice

When studying a plant's protein production, a scientist found two different proteins. The first one contained amino acids from exons 1, 2, 3, 4, 5, and 6, while the second one only contained amino acids from exons from 1, 2, and 3. Which of the following is MOST likely responsible for this difference?

A) a mutation in the gene that encodes an miRNA
B) posttranslational modification
C) RNA editing
D) alternative RNA processing
E) a mutation in the gene that encodes a snoRNA