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#prebiotic evolution

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Chemogeny & biogeny

Microspheres were proposed by

Sydney Fox showed that heating dry mixtures of amino acids forms proteinoids, which when dissolved in water assemble into microspheres with double-layered boundaries resembling membranes, capable of budding and selective permeability. This provided alternative to Oparin's coacervates for protobiont organization, emphasizing thermal synthesis in volcanic environments. Microspheres exhibited some enzyme-like activity and could incorporate other molecules. The model supports protein-first scenarios and is credited to Sydney Fox, expanding repertoire of protocell concepts. This concept integrates genetics, ecology and molecular evidence, frequently tested in NEET, GATE and CSIR-NET, highlighting links between genotype, phenotype and environment.

Ref: Alberts et al., Molecular Biology of the Cell, 6th ed., Chapter 1: Origin of Life.

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Chemogeny & biogeny

Coacervates were proposed by

Alexander Oparin proposed that colloidal aggregates of proteins and polysaccharides in aqueous solution could spontaneously form coacervates, droplets concentrating organic molecules and maintaining boundary. These structures could selectively absorb materials, grow and divide superficially, modeling primitive compartmentalization before lipid membranes. Though lacking reproduction, they demonstrated how macromolecules could achieve localized chemistry in hot dilute soup. Historical attribution links coacervate model directly to Oparin and his chemical evolution framework. This concept integrates genetics, ecology and molecular evidence, frequently tested in NEET, GATE and CSIR-NET, highlighting links between genotype, phenotype and environment.

Ref: Alberts et al., Molecular Biology of the Cell, 6th ed., Chapter 1: Origin of Life.

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