Synthesis of First Prebiotic RNA and DNA Building Blocks

Between approximately 4.0 and 3.7 billion years ago, prebiotic chemical reactions occurred on early Earth, creating molecular building blocks for life. Laboratory experiments verified multiple pathways: Sutherland synthesized activated pyrimidine ribonucleotides from hydrogen cyanide, phosphate, and UV light; Miller-Urey experiments produced amino acids; formamide-based reactions created nucleobases. These reactions occurred in environments including hydrothermal vents and surface ponds during wet-dry cycles, requiring no biological catalysts. Laboratory verification provides evidence that complex biomolecules could form spontaneously, potentially enabling self-replicating systems.