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12 Cards in this Set
- Front
- Back
Evolution:
1. Definition 2. Role of time 3. Role of change in survival |
1. Heritable changes over time; DNA changes or modifications that occur in a POPULATION over a period of time
2. Time is relative; evolution can span thousands of years (humans) to hours (bacteria) 3. Animals survive as a RESULT of change. That is, animals DO NOT CHANGE to survive. |
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Describe Aristotle's contributions to evolutionary history
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developed scale of nature: based on complexity of organism, and that species do not change
Humans > Animals > Plants |
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Describe Linneaus' contributions to evolutionary history
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developed "binomial system"
developed (genus, species) classification |
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Describe Hutton's contributions to evolutionary history
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developed "gradualism"
changes occurred through time gradually with intermediates visible |
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Describe Lamarck's contributions to evolutionary history
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developed "use vs disuse" hypothesis
body parts grew proportional to use; acquired traits were inherited first indication of theory of evolution; not explicitly stated |
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Describe Malthus' contributions to evolutionary history
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developed "geometric vs arithmetic growth"
population undergoing geometric growth while food supply was growing at arithmetic (linear) trend; stated we would eventually run out of food |
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Describe Cuvier's contributions to evolutionary history
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developed "punctuated equilibrium"
through fossil examination he determined that extinctions occurred, sometimes by catastrophes which produce differences; rapid change, no intermediates |
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Describe Lyell's contributions to evolutionary history
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developed "principle of uniformity"
stated that rate of change is always constant |
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Describe Darwin's contributions to evolutionary history
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Evolution occurred through "natural selection"
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Describe Wallace's contributions to evolutionary history
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developed theory of natural selection at the same time as Darwin, but did not publish in time
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Describe some proponents of Darwin' theory of evolution.
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1. there must be a large population size
2. Variation is present 3. The population growth always seems to be limited 4. Genetic fitness "survival of the fittest" |
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What is the synthetic theory of evolution
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combination of Darwin and Mendel. The role genetics plays in evolution
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