Information-Theoretic Considerations Concerning the Origin of Life

Area of Science:

• Origin of Life Studies
• Theoretical Biology
• Information Theory

Background:

• Current research on life's origins typically focuses on prebiotic chemistry or synthetic approaches.
• Few studies address the fundamental principles of life's spontaneous emergence using abstract concepts like information and evolution, independent of specific chemical contexts.

Purpose of the Study:

• To investigate the probability of spontaneous molecular self-replication.
• To explore the relationship between replicator information content, environmental conditions, and the likelihood of self-replication.
• To propose a framework for studying the emergence of life based on information and evolution.

Main Methods:

• Theoretical analysis of self-replication probability as a function of information and environmental factors.
• Mathematical modeling to determine the dependence of discovery probability on monomer formation rates.
• Empirical testing using the digital life system Avida to search for self-replicators.

Main Results:

• The probability of discovering a self-replicator by chance is shown to depend exponentially on the relative rate of monomer formation.
• A significant increase (many orders of magnitude) in the likelihood of discovering a self-replicator occurs when monomer formation rates approximate those in a self-replicating polymer.
• This effect was observed in computational experiments within the Avida digital life system.

Conclusions:

• The study provides a novel perspective on the origins of life, emphasizing information and environmental conditions over specific chemistries.
• Optimizing monomer formation rates relative to replication rates is crucial for increasing the probability of spontaneous self-replication.
• The findings suggest that abstract principles of information and evolution can guide the search for self-replicating systems, both natural and artificial.