1. Each mutant shown below was derived from the wild type:
Wild type 5' GAA CTC GAG CTT AAT 3'
Mutant 1 5' GAA CTC GAG CTT AAT 3'
Mutant 2 5' GAA CTC AAG CTT AAT 3'
Mutant 3 5' GAA CTC GAG CTT AAT 3'
Classify the mutation at both the DNA and protein levels.