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Prebiotic Evolution 1 Life, error threshold & hypercycle Walter - PowerPoint PPT Presentation

Prebiotic Evolution 1 Life, error threshold & hypercycle Walter de Back Collegium Budapest Institute for Advanced Study - what is life? - the chemoton: tibor ganti - error threshold: catch-22 in evolution - hypercycles: coexisting


  1. Prebiotic Evolution 1 Life, error threshold & hypercycle Walter de Back Collegium Budapest Institute for Advanced Study

  2. - what is life? - the chemoton: tibor ganti - error threshold: catch-22 in evolution - hypercycles: coexisting replicators - hypercycles in space: spatial selfstructuring

  3. What is life?

  4. “What is Life today ?”

  5. metabolism boundary template Chemoton Tibor Ganti

  6. Pathways of supersystem evolution metabolism M B boundary M T M B T template B T INFRABIOLOGICAL SYSTEMS

  7. Modern life

  8. Prebiotic RNA world

  9. Nucleic Acids (DNA, RNA) Store of Biological Information “Genetic “Replication” Information” Complementary Base Pairing A U A = U G C U A G C G C RNA

  10. Error threshold AGUCUGCUAGGUAGCUAGUGAUGUAGUGCGAUG Replication Copying AGUCUGC C AGGUAGCUAGUGAUGUAGU U CGAUG G GUCUGCUAGG C AGCUAGUGAUG C AGUGCGAUG AGUCUGCUAGGUAGCUAG GC AUGUAGUGCGAUG AGUCUGCUAGGUAGCUAGUGGUAGUGCGAUG AGUCUGCUA U GUAGCUAGUGAUGUAGUGCGAUG AGUCUGCUAGGUAGC C AGUGAUGUAGUGCGAUG AGUCUGCUAGGUAGCUAGUGAUGUAGUGCGA G UG AGUCUGCUAGGUAGCUAGUGAUGUAGUGCG UC G A U UCUGCUAGGUA C CUAGUGAUGUAGUGCGAUG AGUCUGCUAGGUAGCU C AGUGAUGUAGUGCGAUG

  11. Error threshold AGUC Replication Copying AGUC G GUC AGUC AGUC AGUC AGUC AGUC AGUC A U UC AGUC

  12. Quasi-species and error threshold

  13. No genome without enzymes, and no enzyme without genomes

  14. Cooperation of unlinked genes the hypercycle

  15. Hypercyles on a surface

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