BIO120H1 Lecture Notes - Lecture 2: Hms Beagle, Linnean Society Of London, Botany
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BIO120H1 Full Course Notes
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Document Summary
Living things change gradually from one form into another over time. Challenges view of direct creation of all things in their present form. Concept of a changing universe replaced view of a static world. A phenomenon with no purpose replaced view that the causes of all phenomena had a purpose. Linear rather than branching view of evolution. First to provide a causal mechanism - the inheritance of acquired characters. The giraffe"s neck: lamarck"s example for the inheritance of acquired characters. Progressive increase in neck during the lifetime of an individual is passed on to offspring. Discovery of the correct mechanism - charles darwin and alfred russell wallace co-discover the chief mechanism of evolution, natural selection. Events leading up to the publication of the origin of species . After return from beagles, 20 years taken up with accumulation of evidence for the theory of evolution. 1844: wrote but did not publish an essay on natural selection.
