Results 61 to 70 of about 19,936 (198)
Asymmetric Spatiotemporal Evolution of Prebiotic Homochirality
Origins of Life and Evolution of Biospheres, 2006 The role of asymmetry on the evolution of prebiotic homochirality is investigated in the context of autocatalytic polymerization reaction networks. A model featuring enantiometric cross-inhibition and chiral bias is used to study the diffusion equations controlling the spatiotemporal development of left and right-handed domains.
openaire +3 more sources
Fourth Symposium on Chemical Evolution and the Origin and Evolution of Life [PDF]
This symposium was held at the NASA Ames Research Center, Moffett Field, California, July 24-27, 1990. The NASA exobiology investigators reported their recent research findings. Scientific papers were presented in the following areas: cosmic evolution of
Andersen, Dale T. +3 more
core +1 more source
Fundamental Molecules of Life are Pigments which Arose and Evolved to Dissipate the Solar Spectrum
, 2014 The driving force behind the origin and evolution of life has been the thermodynamic imperative of increasing the entropy production of the biosphere through increasing the global solar photon dissipation rate.
Michaelian, Karo, Simeonov, Aleksandar
core +2 more sources
A study of prebiotic evolution
Complexity, 2003 AbstractA very simple model prebiotic system is explored, both, to elucidate the full complexity of its dynamic behavior, and from the standpoint of what a thermal analysis can tell us about evolution more generally. The system consists of a coacervate containing a four variable enzymatic oscillator that is driven by a single input concentration.
openaire +1 more source
Non-canonical nucleosides and chemistry of the emergence of life
Nature Communications, 2018 Prebiotic chemistry, driven by changing environmental parameters provides canonical and a multitude of non-canonical nucleosides. This suggests that Watson-Crick base pairs were selected from a diverse pool of nucleosides in a pre-Darwinian chemical ...
Sidney Becker +3 more
doaj +1 more source
Role of Mineral Surfaces in Prebiotic Chemical Evolution. In Silico Quantum Mechanical Studies
Life, 2019 There is a consensus that the interaction of organic molecules with the surfaces of naturally-occurring minerals might have played a crucial role in chemical evolution and complexification in a prebiotic era.
Albert Rimola +2 more
doaj +1 more source
Emergent properties as by-products of prebiotic evolution of aminoacylation ribozymes. [PDF]
Nat Commun, 2022 Janzen E +6 more
europepmc +1 more source
Evolution at the Origins of Life?
LifeThe role of evolutionary theory at the origin of life is an extensively debated topic. The origin and early development of life is usually separated into a prebiotic phase and a protocellular phase, ultimately leading to the Last Universal Common ...
Ludo L. J. Schoenmakers +2 more
doaj +1 more source
Searching for lost nucleotides of the pre-RNA World with a self-refining model of early Earth
Nature Communications, 2018 The nucleotides of RNA appear to be products of evolution. Experimental studies are showing that plausible proto-nucleotides can be formed in simulated early Earth environments.
Nicholas V. Hud
doaj +1 more source
Hydrothermal Scenario for Amino Acids and Sulfur-Containing Amino Acids Formation
Acta Chimica SlovenicaThe chemical evolution of amino acids, especially sulfur-containing ones, requires appropriate conditions and natural sources to provide starting prebiotic compounds.
Sofia Slavova +6 more
doaj +1 more source