What is the function of Adenine in DNA and RNA?

Adenine plays a crucial role in the structure and function of both DNA and RNA as a nucleobase, which is a component of the nucleotides that make up these nucleic acids. In DNA, adenine pairs specifically with thymine through two hydrogen bonds, creating a stable base pairing that is vital for the double-helix structure. Similarly, in RNA, adenine pairs with uracil instead of thymine. This fundamental pairing is essential for the processes of DNA replication and RNA transcription, ensuring that genetic information is accurately transferred and expressed.

The distinctions between the bases in DNA and RNA highlight adenine’s versatility in genetic coding and regulation, underscoring its importance in the cell's molecular machinery. Understanding this pairing mechanism is critical for grasping how genetic information is stored and utilized within biological systems.