what is pyrimidine
Pyrimidine is group of molecules that are part of the DNA and RNA structure. These molecules feature a single ring structure made of six atoms.hen a sugar group is bound to a pyrimidine or a purine, it is called a nucleoside. Deoxycytosine and (deoxy)thymidine are the pyrimidine nucleosides and deoxyadenosine and deoxyguanosine are the purine nucleosides.