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There are three; cytosine, thymine and uracil.

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Which of the nitrogenous bases are pyrimidines?

Thymine and cytosine.


Which nitrogenous bases are the pyrimidines and which are the purines?

Cytosine, thymine and uracil are the pyrimidines in animal usage.


What nitrogenous bases are pyrimidines?

Pyrimidines are the single ringed structures-Cytosine and ThyminePurines are the double ringed structures- Adenine and Guanine.


What and what are two classes of nitrogenous bases?

The two classes of nitrogenous bases are purines and pyrimidines. Purines include adenine and guanine, while pyrimidines include cytosine, thymine, and uracil.


What are the two major groups of nitrogenous bases in RNA and DNA?

Purines and Pyrimidines


Which two groups are nitrogenous bases categorized?

Nitrogenous bases are categorized into two groups: pyrimidines (cytosine, thymine, and uracil) and purines (adenine and guanine).


What two classes belong to the class of nitrogenous bases called purines?

Adenine and Guanine are the two classes of nitrogenous bases that belong to purines.


What group of purines and pyrimidines belong to?

Nitrogen containing bases


Belong to the class of nitrogenous bases called purines?

Adenine and Guanine belong to the class of nitrogenous bases called purines. They are characterized by a double-ring structure that includes both a six-membered ring and a five-membered ring. These purine bases play a crucial role in the structure of DNA and RNA molecules.


What and what belong to the class of nitrogenous bases called pyrimidnes?

Plato users D. Thymine, cytosine


What are three types of pyrimidines?

Cytosine and thymine are the nitrogenous bases used in DNA. Uracil substitutes for thymine in RNA.


What are the two nitrogen bases that are single ring structures?

Thymine is a single-ringed nitrogenous base.