# Molecular Biology > **Machine-Evolution Nexus:** [[articles/Digital Darwinism and the Invisible World of Machine Evolution|Digital Darwinism and the Invisible World of Machine Evolution]] places this node within the history and governance of substrate-independent evolution. **Domain:** Biology / Information / Mechanism **Doc Type:** Canonical Wiki Node **Maturity:** Developed ## Definition Molecular biology studies biological processes through molecules such as DNA, RNA and proteins and the systems that regulate their interaction. ## Nexus Context Its mid-century account of hereditary storage and expression provides the biological counterpart to von Neumann’s formal self-reproduction architecture. ## Evidence Boundary Information language is useful but incomplete unless connected to chemistry, metabolism, development and cellular organization. ## Relationships [[wiki/DNA|DNA]], [[wiki/RNA|RNA]], [[wiki/Central Dogma of Molecular Biology|Central Dogma of Molecular Biology]], [[wiki/Genetic Code|Genetic Code]] ## Sources / Provenance - Alberts et al., _Molecular Biology of the Cell_.