LEC 25 Regulating Protein Synthesis -- Eukaryotes

LEC 25 Regulating Protein Synthesis -- Eukaryotes - ORIGIN...

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ORIGIN OF GENES
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Last impact heating ~3500 Geological stratigraphy, together with radioactive dating, show the sequence of events in the history of the Earth. Note the entry for “cyanobacteria” and “stromatolites” only one billion years after the formation of the Earth. How did life arise so quickly after the end of the Hadean Period?
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A New Picture of the Early Earth Left, Bruce Watson; right, Don Dixon AGES AGO Analyses of crystals in rocks in Australia, left, have formed a new picture of the early Earth, depicted with young oceans in the painting at right. New York Times, Tuesday, December 2, 2008 Isotope composition of ancient zircons suggests that Earth was cooler and wetter in the Hadean Period, giving more time for prebiotic evolution.
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envision life without reproduction? Can we envision reproduction without catalysis and heredity?), what are the most basic molecules that satisfy the minimal requirements? If they are proteins and DNA, how are the two connected? Is there an alternative? How did the genetic code evolve?
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This note was uploaded on 07/08/2010 for the course BIS B16 taught by Professor Gerhart during the Winter '10 term at UBC.

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LEC 25 Regulating Protein Synthesis -- Eukaryotes - ORIGIN...

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