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Monomer Abundance Distribution Patterns as a Universal Biosignature: Examples from Terrestrial and Digital Life
2011
Journal of Molecular Evolution
Organisms leave a distinctive chemical signature in their environment because they synthesize those molecules that maximize their fitness. As a result, the relative concentrations of related chemical monomers in lifebearing environmental samples reflect, in part, those compounds' adaptive utility. In contrast, rates of molecular synthesis in a lifeless environment are dictated by reaction kinetics and thermodynamics, so concentrations of related monomers in abiotic samples tend to exhibit
doi:10.1007/s00239-011-9429-4
pmid:21253717
fatcat:u33cf5odsrglpb4lf25roycipy