Name the common pyrimidine for DNA and RNA

The common pyrimidine found in both DNA and RNA is cytosine. Nucleic acids like DNA and RNA are made up of nucleotides. Each nucleotide consists of a sugar, a phosphate group, and a nitrogenous base. The nitrogenous bases are classified into two types: purines (adenine and guanine) and pyrimidines (cytosine, thymine, and uracil).

Pyrimidines in DNA and RNA

• DNA contains cytosine (C) and thymine (T).
• RNA contains cytosine (C) and uracil (U).
• The pyrimidine that is common to both DNA and RNA is cytosine.

Role of Cytosine

1. Pairs with guanine through three hydrogen bonds.
2. Provides stability to the nucleic acid structure.
3. Plays a role in genetic coding and expression.