Whend the following changes to a DNA sequence would cause a frameshift mutation? A The test odom of a protein coding region, which normally codes for glycine (GGT) is absent. Oskaposition inmediatelyfolowing the fifteenth codon of a protein coding region, five base pairs were inserted (GGTTG). Of the time toon of a protein cooing regen changes from serine (TCG) to proline (CCG). OO The scurd codon ata protein coong sequence changes from alanine (GCT) to alanine (GCC). OL The severty fit codon of a protein coding sequence changes from a tryptophan codon (TGG) to a stop codon (TGA). Weinguttenetest perests anges to this is D