All of the following are synonymous codon pair EXCEPT
Synonymous codons Codons that specify the same amino acids. E.g- GGA, GGG, GGU, and GGC codes for glycine Methionine is coded by AUG only. So, there is no synonymous codon for methionine.
CAU & CAC
AUU & AUC
AUG & AUA
AAU & AAC
Mutations & Codons