Evolution - Evolution Definition of Evolution Changes in...

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Evolution
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Definition of Evolution Changes in the genotype of a population  over a long period of time Changes in the line of descent
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Sources of Genetic Variation Mutations Crossing-over Independent assortment during meiosis Sexual reproduction Chromosome abnormalities
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Charles Darwin 1809-1882 Studied theology at Cambridge University At 22, naturalist on HMS Beagle Traveled for 5 years – South America Animals on the mainland were similar to those  on Galapagos but yet different Darwin’s finches
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Darwin’s Finches
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In 1836, returned to England 1844, ideas about change in organisms Consulted w/Gregor Mendel
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Alfred Wallace – served as a naturalist for Britain Proposed same ideas of change as Darwin
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Darwin’s Premises 1. Char w/in individuals vary, even among  siblings 2. Populations produce more offspring  than are necessary 3. Some individuals possess char that 
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This note was uploaded on 04/16/2008 for the course BIOL 10 taught by Professor All during the Spring '08 term at CSU Fresno.

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Evolution - Evolution Definition of Evolution Changes in...

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