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The rainout of formaldehyde favors a formose-based origin of life in shallow ponds
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Biology Bulletin Reviews, 2021
The models of prebiotic evolution studied by the author are characterized: (1) the quasispecies model, (2) the hypercycle model, and (3) the syser model. The quasispecies model was proposed by Manfred Eigen. This model describes the evolution of a population of RNA macromolecules that can encode hereditary information.
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The models of prebiotic evolution studied by the author are characterized: (1) the quasispecies model, (2) the hypercycle model, and (3) the syser model. The quasispecies model was proposed by Manfred Eigen. This model describes the evolution of a population of RNA macromolecules that can encode hereditary information.
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The evolution of the prebiotic atmosphere
Origins of Life, 1984One-dimensional radiative convective and photochemical models are used to estimate the vertical temperature structure and composition of the earth's prebiotic atmosphere. Greatly enhanced CO2 levels (100-1000 times present) are required to keep the mean surface temperature above freezing in the face of decreased solar luminosity during the earth's ...
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Hydrated electrons and prebiotic evolution
Journal of Theoretical Biology, 1979Abstract It is proposed that reactions of the hydrated electron eaq− in the “primordial soup” were an evolutionary pressure which selected biopolyelectrolytes, coacervates, “organelles” and lipid-membrane-bound structures of a pattern found in the biosphere today.
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Prebiotic Chemical Evolution in the Astrophysical Context
Origins of Life and Evolution of Biospheres, 2015An ever increasing amount of molecular material is being discovered in the interstellar medium, associated with the birth and death of stars and planetary systems. Radio and millimeter-wave astronomical observations, made possible by high-resolution laboratory spectroscopy, uniquely trace the history of gas-phase molecules with biogenic elements. Using
L M, Ziurys +5 more
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Prebiotic evolution: Conformational perspectives
Journal of Theoretical Biology, 1982Abstract Current models of prebiotic evolution are based on the chemical properties of proteins and nucleic acids. Even if it is conceded that these polymers can be synthesized abiotically, it is conceptually difficult to construct a link between them which would serve as a primordial model from which the present day genome could have evolved.
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Chemical Evolution on Titan: Comparisons to the Prebiotic Earth
Origins of life and evolution of the biosphere, 1997Models for the origin of Titan's atmosphere, the processing of the atmosphere and surface and its exobiological role are reviewed. Titan has gained widespread acceptance in the origin of life field as a model for the types of evolutionary processes that could have occurred on prebiotic Earth. Both Titan and Earth possess significant atmospheres (> or =
D W, Clarke, J P, Ferris
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On dating stages in prebiotic chemical evolution
Naturwissenschaften, 2012The notion that RNA must have had a unique and decisive role in the development of life needs hardly be questioned. However, the chemical complexity and other properties of RNA, such as high solubility in water and vulnerability to degradation, make it improbable that RNA could have had an early presence in the development of life on Earth or on any ...
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2013
Whereas 'natural evolution' is a well-studied biological theory, the notion of 'chemical evolution' remains ambiguous. At least two major meanings of 'chemical evolution' can be found. As used by cosmologists, planetologists or geochemists among others, chemical evolution - call it chemical evolution1 - refers to the changes in chemical composition of ...
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Whereas 'natural evolution' is a well-studied biological theory, the notion of 'chemical evolution' remains ambiguous. At least two major meanings of 'chemical evolution' can be found. As used by cosmologists, planetologists or geochemists among others, chemical evolution - call it chemical evolution1 - refers to the changes in chemical composition of ...
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The non-canonical nucleotides and prebiotic evolution
BioSystemsThe mystery of the origin of life has been puzzling mankind for several millenia. Starting from the second half of the 20th century, when the crucial role of nucleic acids in biological heredity became apparent, the emphasis in the field has shifted to the explanation of the origin of nucleic acids and the mechanisms of copying of macromolecules.
Alexey S. Ruzov, Alexander S. Ermakov
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