Which bases are pyrimidines?

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Multiple Choice

Which bases are pyrimidines?

Explanation:
Pyrimidines are the single-ring nitrogenous bases. In DNA, the pyrimidines are cytosine and thymine (and in RNA, uracil takes the place of thymine). The other bases, adenine and guanine, are purines with two-ring structures. So, cytosine and thymine are the pyrimidines.

Pyrimidines are the single-ring nitrogenous bases. In DNA, the pyrimidines are cytosine and thymine (and in RNA, uracil takes the place of thymine). The other bases, adenine and guanine, are purines with two-ring structures. So, cytosine and thymine are the pyrimidines.

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