Guanine Flag - Nucleotide G Flag

The flag for Guanine has a green field.  Since green and Guanine start with a G, this should help.  In the green field is a black purine base structure.  Along the fly is a black area with six dots that represent the three hydrogen bonds associated with Guanine.  The dots closer to the green field represent the three atoms on Guanine that bond to Cytosine.  The upper red dot represents oxygen, while the two lower white dots represent hydrogen.

IYNN, most models use the colour red for oxygen because oxygenated blood is bright red.  Likewise most models colour nitrogen blue because the primary gas that makes up the sky is nitrogen, which appears blue.  Finally hydrogen is white because white light is created in our organic hydrogen fusion reactors, better known as stars: free energy we don't have to pay for. Oh yeah, IYNN means...If You Never Noticed.

The dots closer to the fly represent the atoms that hydrogen with Guanine on the Cytosine molecule.

 The first isolation of Guanine was in 1844, so we think, in Germany by Julius Bodo Unger.  Julius extracted this molecule from bird poo, better known as Guano, which is where it gets it name.  Consequently fun nick names for this nucleotide could be: Poopnine, Crapnine, Fecalnine, Dodonine, Poopeenine, Fecesinine, Scatinine, Droppinganine, Stoolinine, Turdnine, Poopoonine, Dunganine  and last but not least: Shitnine.