A friend and I recently did a photo walk along Singapore’s Marina Bay. Our main destination is the Helix Bridge, which was officially opened in 2010.
While walking at the bridge, my friend noticed pairs of letters CG and AT which are lit up at night in red and green colors. Having a biology background, I quickly thought of the nucleobases that provide the nucleotide structure necessary to form base pairs, the guanine and cytosine (GC) and the adenine and thymine (AT). GC and AT comprise the four bases of Deoxyribonucleic acid (DNA). GC containing triple bonds and AT containing double bonds which stabilizes the structure, hence, the bridge was previously called “The Double Helix Bridge.”