The answer is 22. This
is derived by dividing 66 by 3. 3 is the number of nucleotides that make a codon
which is later translated into an amino acid. During translation, the mRNA is read in codon (3 nucleotide
sequences) sequences by the anticodons
of tRNAs. The anticodon that matches the
codon then determines which amino acid is added to the polypeptide chain.
