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thymine and cytosine

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How many rings does pyrimidines have?

Pyrimidines have one ring structure in their molecular composition. This ring is composed of six atoms, including four carbon atoms and two nitrogen atoms, arranged in a hexagonal shape.


What are two Pyrimidines?

Thymine & Adnine


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 many purines and pyrimidines are present in the DNA molecule?

There are two purines (adenine and guanine) and two pyrimidines (cytosine and thymine) present in the DNA molecule.


What is Thymine and cytosine also called?

Thymine and cytosine are two nitrogen bases found in DNA. DNA is composed of thousands of nucleotides which are composed of one of four nitrogen bases. Both of these nitrogen bases are also pyrimidines, or they have one ring like structure See related link for more info on thymine, cytosine and pyrimidines.


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.


Why are thymine and cytosine are called pyrimidines?

Thymine and cytosine are called pyrimidines due to their chemical structure, which includes a six-membered nitrogen-containing ring with two nitrogen atoms. Pyrimidines are one of the two main types of nitrogenous bases found in DNA and RNA, the other being purines.


What two bases are Pyrimidines?

Thymine and Cytosine :)


Which one is purines and pyrimidines are bigger?

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


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 2 bases that belongs to the pyrimidines group?

The two Purines are: Adenine and Guanine (A and G) The two Pyrimidines are: Cytosine and Thymine (C and T)


What are the two pyrimadine N-bases?

c and t are pyrimidines, as is U