Biology: The origin and History of Life

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The Origin and History of Life
Life's origin remains a mysteryLife arose on earth about 4 billion years ago Miller Experiment-simulated early Earth's atmosphere; simple molecules combined into organic compounds, like amino acids 
Clay and Iron Pyrite-catalyst for the first synthesized reactions          -uracils line with sugar phosphate bonds         -form hydrogen bonds with adenines          -clay template releases double strand 

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The Origin and History of Life cont.
Once a self replicating molecule like RNA formed, natural selection took over      -stable molecules that could self-replicate became more common 

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The First Gene
-first genetic material and enzymes may have both been RNA            -catalyst for own replication DNA---RNA---POLYPEPTIDES---PROTEIN
RNA-important for transcription and translation to polypeptides 

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