How has evolution shaped the information stored in living organisms?

In the context of systems biology, evolution has shaped the information stored in living organisms through a series of transitions that established sophisticated mechanisms for the storage, handling, and deployment of biological data.1

The fundamental architecture for this information is found in RNA and DNA, which serve as the primary media for transmission. Evolution has refined these systems by developing complex gene-regulatory networks, which include transcription factors and cis-regulatory elements that dictate how genes are expressed.1

Furthermore, natural selection acts as a critical filter, preserving genetic variations that enhance survival and reproduction while eliminating harmful mutations. To ensure the fidelity of this stored information across generations, organisms have evolved robust DNA repair mechanisms—such as mismatch repair and excision pathways—that monitor and correct lesions, thereby maintaining the integrity of the genetic code. These interconnected networks not only govern physiological function but also define the evolutionary possibilities available to a species.231