GGR305H1 Lecture Notes - Lecture 3: Plate Tectonics, Vampire Ground Finch, Sympatric Speciation
15 Mar 2016
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Don"t resemble normal organisms found in mainlands: ex: hawaii has taxonomic differences in species than mainland. Really big reptiles taking over: ex: komodo dragons. Tend to get better dispersers within suites of dispersers: as travel further east from mainland new guinea, past line 5 (blue line) have less species. Mechanisms within organisms: things that determine micro-evolution. Mechanisms that shape populations: cause populations to change over time. How do new spp. arise: allopatric vs sympatric speciation, how do we get new species from an ancestor. Quote at the top: lewis thomas summarizes idea that it"s bizarre how we can explain diversity of life on this planet, life seems to be organized. Evolution: how life"s complexity came about, suggests there is change over time, short-term changes (differences between you and your great-great grandparents, long-term changes. Mechanism for change is in the nucleus: dna located in nucleus.
