Which bases are pyrimidines?

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Multiple Choice

Which bases are pyrimidines?

Explanation:
Pyrimidines are the single-ring, smaller nitrogenous bases. In DNA, the pyrimidines are cytosine and thymine (uracil is the pyrimidine used in RNA). The other bases, adenine and guanine, are purines and have two rings. So the bases that are pyrimidines are cytosine and thymine.

Pyrimidines are the single-ring, smaller nitrogenous bases. In DNA, the pyrimidines are cytosine and thymine (uracil is the pyrimidine used in RNA). The other bases, adenine and guanine, are purines and have two rings. So the bases that are pyrimidines are cytosine and thymine.

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