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Which nitrogenous bases are considered pyrimidines?
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Which nitrogenous bases are considered pyrimidines?

User Artanik
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Answer:

Cytosine and thymine are the two major pyrimidine bases in DNA and base pair (see Watson–Crick Pairing) with guanine and adenine (see Purine Bases), respectively. In RNA, uracil replaces thymine and base pairs with adenine.

User Ralf Wagner
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