Nucleic acid secondary structure
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![Different types of RNA Secondary Structures. [1] First structure ...](/imgres?imgurl=https://www.researchgate.net/publication/261030242/figure/fig1/AS:296897903382543@1447797384405/Different-types-of-RNA-Secondary-Structures-1-First-structure-represents-a-stem-with.png&imgrefurl=https://www.researchgate.net/figure/Different-types-of-RNA-Secondary-Structures-1-First-structure-represents-a-stem-with_fig1_261030242&h=600&w=502&tbnid=yKAcjDCKrgVLoM&q=Nucleic+acid+secondary+structure&tbnh=135&tbnw=113&usg=AI4_-kQ-1ZyAG3ICl9NcCLZrpVrLu2suUA&vet=1&docid=h1GgI0olQbUt4M&sa=X&ved=2ahUKEwil8b6ZuZWGAxXN38kDHZw_B-IQ9QF6BAgAEAc)
Nucleic acid secondary structure is the basepairing interactions within a single nucleic acid polymer or between two polymers. It can be represented as a list of bases which are paired in a nucleic acid molecule. Wikipedia