Biology 3466B Lecture Notes - Lecture 9: Reducing Atmosphere, Ribosome, Stanley Miller
18 Oct 2012
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The old view: there were 5 kingdoms. Evolves and mutates slowly, also in all dna, maintains its function, critical to life. Luca: last universal common ancestor: had cellular form, stored information as dna, had machinery for dna replication, had at least 60 homologous genes, had enzymes made of proteins, probably was similar to common day bacteria. What is life: stores and transmit information (genotype, express information and have a function (phenotype, therefore must have the capacity to evolve through evolution, but the chicken and the egg problem. What came first the storage of the information or the function. By itself dna does not preform a function and by itself protein cannot store information. Early earth: reducing atmosphere meaning we would not be able to survive on it. Every step of evolution can be replicated in the lab: step one: synthesis of simple organic molecules.
