Based on the given data, each codon has nucleotides, and each of nucleotide can have one of four dissimilar base pairs. So, the number of combinations is as follows:
Therefore, the number of possible unique codons is. The adjoined table below shows the total possible codons:
If the (deoxyribonucleic acid) had only types of nucleotides, so to specify all amino acids the codon must have nucleotides.
Therefore, this number is sufficient to code all amino acids.