Assertion: cytosine | /r/HasProperty | pyrimidine
Facets:
Source sentences:
text: Cytosine is a pyrimidine; it has only one ring in its structure.
text: A and G belong to the chemical class called purines; C, T, and U are pyrimidines.
text: The single-ring nitrogenous bases, thymine and cytosine, are called pyrimidines, and the double-ring bases, adenine and guanine, are called purines.
text: The four nitrogen-containing bases found in DNA are A, T, C and G. A and G are classified as "purines," while C and T are considered as "pyrimidines.
text: Adenine and guanine belong to a class of compounds called purines, while cytosine, thymine and uracil are termed pyrimidines.
text: In terms of chemical structure, adenine and guanine are both purines while thymine and cytosine are pyrimidines.
text: Note that guanine and adenine, the purines, have two rings, while cytosine and thymine, the pyrimidines, have only one ring.
text: A and G are classified as purines, while C and T are pyrimidines.