Unformatted text preview: selection, produced very simple cells through a sequence of four main stages: o the abiotic (nonliving) synthesis of small organic molecules i.e. amino acids and nucleotides o the joining of these small molecules (monomers) into polymers including proteins and nucleic acids o packaging of these molecules into “protobionts” droplets with membranes that maintained an internal chemistry different from that of their surroundings o origin of self-replicating molecules that eventually made inheritance possible Synthesis of Organic Compounds on Early Earth • Earth formed 4.6 billion years ago , along with rest of solar system...
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This note was uploaded on 09/27/2008 for the course BISC 220LG taught by Professor Mcclure during the Fall '07 term at USC.
- Fall '07