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Cytosine and thymine. one is a double ring sugar while the other is a single ring suagr. They are complemetarily paired with purines.

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Which nitrogen bases in DNA are pyrimidines?

Cytosine, uracil and thymine are the three pyrimidines.


What Contains pyrimidines?

Various medications and dietary supplements contains pyrimidines. Pyrimidines are important components to HIV therapeutics, the thiamine vitamin, and the narcotic barbitone.


How do purines differ from pyrimidines?

Purines and pyrimidines are the building blocks of nucleic acids. The difference between purines and pyrimidines is in the number of carbon-rings present. Pyrimidines contain one carbon-ring while purines have two.


How is Presence of purines and pyrimidines in DNA found?

Adenine and Guanine are purines, and Thymine and Cytosine are pyrimidines.


Which bases are considered pyrimidines?

There are three nucleobases in nucleic acids that are considered pyrimidines or pyrimidine derivatives. Uracil, cytosine, and thymine are the three pyrimidines.


How are pyrimidines different from the purines?

Pyrimidines (cytosine, thymine, uracil) have a single-ring structure, while purines (adenine, guanine) have a double-ring structure. Purines always pair with pyrimidines in DNA and RNA bases. Additionally, purines are larger molecules compared to pyrimidines.


Which one is purines and pyrimidines are bigger?

Purines because purines have two rings where as pyrimidines have only one ring.


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

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


What are two Pyrimidines?

Thymine & Adnine


What nitrogenous bases are pyrimidines?

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


Which nucleotides are pyrimidines?

Remember: Pure As Gold--- purines are arginine and guanine so, pyrimidines must be thymine and cytosine FREEGAZA.ORG


What are the two classes of nitrogen bases?

The two classes of nitrogen bases are purines and pyrimidines. Purines include adenine and guanine, which have a double-ring structure, while pyrimidines include cytosine, thymine, and uracil, which have a single-ring structure.