Because A, G, C, and T appear in the DNA, these molecules are called DNA-bases; A, G, C, and U are called RNA-bases. Uracil and thymine are identical except that uracil lacks the 5' methyl group. Adenine and guanine belong to the double-ringed class of molecules called purines (abbreviated as R).
Definition of decalcomania. 1  1 : the art or process of transferring pictures and designs from specially prepared paper (as to glass) 2  2 : decal.
The surrealist Oscar DomÃ­nguez (referring to his work as decalcomania with no preconceived object) took up the technique in 1936, using gouache spread thinly on a sheet of paper or other surface (glass has been used), which is then pressed onto another surface such as a canvas.