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8 Cards in this Set
- Front
- Back
What is variation?
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Variation is the differences between the members of a species
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What is a mutation?
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A mutation is a change in the amount or structure of DNA
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What does a mutated gene form?
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A recessive allele
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What are mutagens?
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Mutagens are agents which cause DNA mutation
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What is evolution?
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Evolution is the change from one species to another by natural selection over long periods of time
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What are the observations put forward in the theory of natural selection?
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Organisms overbreed, Population numbers remain static, Inherited variations arise.
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What are the conclusions that can be draw from the theory of natural selection?
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There is a struggle for existance, Those organisms that adapt will survive (survival of the fittest)
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What 3 areas provide evidence for evolution?
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Fossil records, comparative anatomy, study of embreos
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