Thymine

Thymine is one of the four building blocks of DNA, the molecule that carries genetic information in living organisms. It is a type of base called a pyrimidine and pairs specifically with adenine through hydrogen bonds, helping to stabilize the DNA structure. Thymine's structure includes a ring with nitrogen and oxygen atoms, and it plays a crucial role in storing genetic instructions for development, functioning, and reproduction. Its precise pairing ensures accurate DNA replication and gene expression, making it essential for life processes.