There are three; cytosine, thymine and uracil.
Cytosine (C) and Thymine (T) are pyrimidines.
cytosine and guanine
cytosine, thymine, and uracil
Cytosine, thymine and uracil are the pyrimidines in animal usage.
Nitrogenous bases, either purines or pyrimidines.
Purines bond to pyrimidines
Pyrimidines are the single ringed structures-Cytosine and ThyminePurines are the double ringed structures- Adenine and Guanine.
adenine and cytosine
Thymine and cytosine.
Cytosine, thymine and uracil are the pyrimidines in animal usage.
what belongs to the class of nitrogenous bases called purines
Purines and Pyrimidines
Nitrogenous bases, either purines or pyrimidines.
Purines bond to pyrimidines
Pyrimidines are the single ringed structures-Cytosine and ThyminePurines are the double ringed structures- Adenine and Guanine.
Nitrogen containing bases
Plato users D. Thymine, cytosine
Cytosine and thymine are the nitrogenous bases used in DNA. Uracil substitutes for thymine in RNA.
Thymine is a single-ringed nitrogenous base.
adenine and cytosine