:250 Ndị ọzọ diazine bụ pyrazine (amị nitrogen na ọnọdụ 1 na 4) na pyridazine (amịrị nitrogen na ọnọdụ 1 na 2).  Na acids nucleic, ụdị atọ nke nucleobases bụ ihe ndị pyrimidine: cytosine (C), thymine (T), na uracil (U). 
:250 Ndi ozo diazine bụ pyrazine (ami nitrogen na ọnodu 1 na 4) na pyridazine (amịrị nitrogen na onodụ 1 na 2).  Na acids nucleic, udị ato nke nucleobases bu ihe ndị pyrimidine: cytosine (C), thymine (T), na uracil (U). 