BIOL 121 Chapter Notes -Tiny Wings, Special Creation, Allele Frequency

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5 Nov 2011
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BIOL 121 Full Course Notes
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Pattern-how things are in nature/statement summarizing observations eg. for special creation: species created independently of one another, don"t change. Process-produces that pattern/set of observations eg. for special creation: instantaneous and independent creation of orgs. by god. Plato claimed organisms made perfect by god, unchanging. Aristotle ordered organisms into ladder of life/chain of being-more big & complex at top. Lamarck: species change, evolve from lower ladder species to higher better ones. Darwin & wallace: variation among individuals very imp, not linear like ladder idea. Theory of evolution"s pattern claimed: 1) species change thru time 2) related. Fossil-any trace of an organism that lived in the past (eg. bones, shells, tracks, dung) Extinction: darwin said because array of species has changed through time. Transitional form-fossil species with traits intermediate btwn old & younger species. Law of succession: extinct species succeeded by similar species (they"re related) eg. fossils show whales used to be land/h20 creatures w/ limbs, now h20 & no limbs.

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