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Chain of being
rank organisms from the lowest forms of life, to humans, to spiritual beings |
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Theory of Catastrophism
All organisms were created at one time and catastrophies killed many species over time |
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Inheritance of Acquired Characteristics
The modifications an organism acquires can be passed on to its offspring
Ex: giraffes neck |
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Theory of Uniformity
gradual, uniform, repetitive change |
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Traveled on the Beagle collecting organisms
Developed the theory of evolution
Wrote "Origin of Species" |
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| Individuals that are better adapted to their environment survive and reproduce |
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| allele frequencies of a variation in phenotypes shift in one direction |
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| intermediate (heterozygote) forms of a trait are favored and eliminates individuals that have extreme or unusual traits |
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| extreme variations are favored and the intermediate forms are selected against |
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| favors a trait that gives the individual a competitive edge in attracting or keeping a mate |
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| selective breeding of plants and animals to encourage the occurrence of desirable traits |
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