- Add a gold (phosphate) and a silver (deoxyribose)
to the right and left wires. Add your choice of one of the matching
nitrogen bases to each wire. Remember that the purine adenine pairs
with the pyrimidine thymine, and the purine guanine pairs with the
pyrimidine cytosine. Cross the wires, and gently remove the slack
in the wire as you did before.