LIFESCI 3C03 Chapter Notes - Chapter 2: Fecundity
16 Jan 2017
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The universe is populated by stable things: collections of atoms that are permanent enough or common enough to deserve a name. Atoms within entities are organized in a manner that makes them most stable. The earliest form of natural selection was simply a selection of stable forms and a rejection of unstable ones. Co(cid:373)(cid:271)i(cid:374)atio(cid:374) of gases hypothesized to (cid:271)e prese(cid:374)t i(cid:374) earth"s early at(cid:373)osphere (water, carbon dioxide, methane, and ammonia) and chemical/energy conditions of the young. Earth allows formation of a primordial soup, containing amino acids. Organic substances become locally concentrated and energy from the sun causes combination into larger molecules. Replicator: the original molecule that had the ability to create copies of itself. The replication process is not perfect, leading to mutation in daughter molecules that makes evolution possible. As mistakes in the replication of the original replicator arose, the primeval soup became filled by a population of several varieties of replicating molecules all sharing a common ancestor.
