a nitrogen base in DNA that pairs with adenine
The nitrogen base in DNA that pairs with adenine is called thymine
The nitrogen base in DNA that pairs with adenine is called thymine. DNA is composed of four different nitrogen bases: adenine (A), thymine (T), cytosine (C), and guanine (G). These nitrogen bases form pairs within the DNA double helix structure.
The pairing of nitrogen bases is essential for the replication and stability of DNA. Adenine always pairs with thymine, while cytosine always pairs with guanine. These pairs are held together by hydrogen bonds, which form between specific atoms in the nitrogen bases.
Thymine and adenine form a complementary base pair due to their specific chemical structure. Thymine contains a keto group (-C=O) on its ring structure, while adenine contains an amine group (-NH2) on its ring. These groups are able to form hydrogen bonds, resulting in a stable pairing between thymine and adenine.
The pairing of nitrogen bases is crucial for maintaining the genetic code in DNA. During DNA replication, the two strands of the double helix separate, and each strand serves as a template for the synthesis of a new complementary strand. This process ensures that the genetic information is accurately copied and passed on to daughter cells.
In summary, thymine is the nitrogen base in DNA that specifically pairs with adenine through hydrogen bonding. This pairing plays a fundamental role in DNA replication and maintenance of the genetic code.
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