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.
Origin and Etymology of decalcomania. French dÃ©calcomanie, from dÃ©calquer to copy by tracing (from dÃ©- de- + calquer to trace, from Italian calcare, literally, to tread, from Latin) + manie mania, from Late Latin mania â more at caulk.