Pyrimidines.
THEY ARE ALL NITROGENOUS BASES IN THE DNA adenine and guanine are purines thymine and cytosine are pyrimidines
number and sequence of nitrogen bases
two of the bases are purines- adenine and guanine.
Purines
Nucleotides (Nitrogeneous bases, deoxyribose, phosphate group)
what belongs to the class of nitrogenous bases called purines
Adenine and guanine are both double ringed purines.
Adenine and guanine
Adenine and guanine are the two purines bases present in DNA.Two purines in DNA are adenine and guanine.
Purines and pyrimidines are nitrogen bases found in DNA and RNA .They are nitrogen containing heterocyclic compounds .Purines are large double ringed while pyrimidines are small single ringed .
Guanine and Adenosine
purines and pyramidines.