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Evolvability Tradeoffs in Emergent Digital Replicators.

Thomas LaBar, Arend Hintze, Christoph Adami1

  • 1Michigan State University.

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|November 9, 2016
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Summary
This summary is machine-generated.

The origin of life remains a mystery, but digital evolution reveals two types of self-replicating organisms: one excels at replication, the other at innovation. This trade-off impacts evolvability and offers insights into early life.

Keywords:
Evolvabilitydigital lifeorigin of life

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Area of Science:

  • Origin of Life Research
  • Digital Evolution
  • Astrobiology

Background:

  • The origin of life is poorly understood due to the single known example of life on Earth.
  • Evolvability, the capacity for life to increase in complexity, is not guaranteed for all self-replicating entities.
  • Biochemical experiments on self-replicators are limited in scope and capability.

Purpose of the Study:

  • To investigate the relationship between emergent replicators and evolvability using digital evolution.
  • To classify self-replicators based on their functional properties and evolutionary potential.
  • To explore the trade-offs in evolvability related to replication machinery structure.

Main Methods:

  • Utilized the digital evolution system Avida to simulate self-replicating entities.
  • Classified fixed-length emergent replicators into distinct categories via functional analysis.
  • Analyzed the evolvability of replicators in terms of replication optimization and innovation acquisition.

Main Results:

  • Identified two distinct classes of emergent replicators within the Avida system.
  • One class demonstrated higher evolvability in optimizing replication efficiency.
  • The second class showed greater evolvability in acquiring novel evolutionary innovations.

Conclusions:

  • A trade-off exists between optimizing replication and acquiring innovations in emergent replicators.
  • The structure of a replicator's machinery influences its evolvability.
  • Findings provide insights into the potential evolutionary pathways of early biochemical replicators.