Assertion :Purine bases present in DNA are adenine and guanine. Reason: The base thymine is present in RNA while base uracil is present in DNA.

Assertion :Purine bases present in DNA are adenine and guanine. Reason: The base thymine is present in RNA while base uracil is present in DNA.

Purines and pyrimidines, make up the two groups of nitrogenous base which plays on important role in structural backbone of DNA. Adenine and guanine are purines, while cytosine and thymine are pyrimidines. Purines pairs with pyrimidines, by formation of H-bonds. Adenine attaches to thymine, by two hydrogen bonds, while cytosine and guanine forms three hydrogen between …

Guanine is a purine base. Adenine is another purine base. Cytosine, Thymine and Uracil are pyrimidines.

Nitrogenous bases present in the DNA can be grouped into two categories: purines (Adenine (A) and Guanine (G)), and pyrimidine (Cytosine (C) and Thymine (T)). These nitrogenous bases are attached to C1' of deoxyribose through a glycosidic bond.

In DNA, purine nitrogen bases are guanine and adenine. In DNA, the purines adenine and guanine form hydrogen bonds with their complementary pyrimidines thymine and cytosine, respectively. This is called as a complementary base pairing.

Purines present in DNA & RNA are same and are Adenine and Guanine. But pyrimidines are not same. Pyrimidines in DNA are Cytosine and Thymine and Cytosine and Uracil in RNA.

There are 4 purines and 4 pyrimidines that are of concern to us.

On an average how many purine N2 bases are present in single coil of DNA 5 4 10 Uncertain

Assertion :Purine bases present in DNA are adenine and guanine. Reason: The base thymine is present in RNA while base uracil is present in DNA.