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HISTORY The Beagle Charles Darwin 1831 Origin of Species 1859 Galapagos Islands Volcanic Islands Age? Temperature of Lava? Diversity of SPECIES Most Famous! http: //w ww. Gene frequencies will remain the same from generation to generation as long as 5 conditions are kept in a population. 1. St Bernard and Chihuahua 2. St Bernard and Wolf 3. Gorilla and Chimp 4. Gorilla and YOU 5. European Human and African Human 6. Horse and Cow 7. Horse and Donkey 8. Horse and Mule 9. Mule and Donkey 10.Ground Finch of Galapagos and Finch of Ecuador 1. St Bernard and Chihuahua 2. St Bernard and Wolf 3. Gorilla and Chimp 4. Gorilla and YOU 5. European Human and African Human 6. Horse and Cow 7. Horse and Donkey 8. Horse and Mule 9. Mule and Donkey 10.Ground Finch of Galapagos and Finch of Ecuador A group of organisms with similar traits that can interbreed and produce fertile offspring. A group of organisms of the same species in a certain area at a certain time. Same Species? Same Population? Chukar partridge in Mandan, North Dakota in 2012 and Chukar partridge in Elko, NV in 2012 Same Species? Same Population? Chukar partridge in Elko, NV in 2011 and Chukar partridge in Elko, NV in 2012 • No MUTATION • No MIGRATION • RANDOM MATING • POPULATION is LARGE • No GENOTYPE has a better chance at surviving and passing on their genes than another. Natural Selection • The mechanism for Evolution • The best traits in a population survive and are passed-on to the next generation. • Must be variation present. Areas of Evidence that support the Theory of Evolution: GEOLOGIC: fossils, strata, etc. RADIOACTIVE DATING STRUCTURAL: homologous structures, etc. MOLECULAR DEVELOPMENTAL References: Chapter 16 http://www.pbs.org/wgbh/ evolution/