Easy way to Remember

You now know that the smallest unit of our genetic information is the triplet of nucleotides called a codon. To help our understanding, these have been represented using the first letter of each nucleotide's spelling. A is for Adenine, C is for Cytosine, G is for Guanine, and T is for Thymine. I seem to always have trouble remembering which nucleotide goes with what partner. To help me remember I use their alphabetical order A, C, G, T...then I remember that the ends meet. Thus A goes with T which leaves C to go with G. Easy way to remember.