Guanine - DNA-Cytosine, Cytosine - DNA-Guanine, Adenine - DNA-Thymine, Thymine - DNA-Adenine, DNA - Double Strand, RNA - Single Strand, Guanine - RNA-Cytosine, Cytosine - RNA-Guanine, Adenine - RNA-Uracil, Uracil - RNA-Adenine,

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