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8 Cards in this Set
- Front
- Back
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What 3 major lines of evidence did Darwin use to argue that species have changed through time? |
1) Fossils frequently resemble species found in the same area today 2) Many species have gone extinct 3) Vestigial traits are common |
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What is the law of succession? |
Lyell noticed that extinct species in the fossil record were succeeded in the same region by similar species. |
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What is Darwin's descent with modification? |
Species that exist today descended from other, preexisting species and that species changed over time. |
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What is Lamarckian inheritance? |
An organism can pass on characteristics that it acquired during its lifetime to its offspring. Lamarck proposed that organisms become more complex over time. |
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Evolution is a change in ____ frequencies in a population over time. |
allele |
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Homologous traits = similar ___ Analogous traits = similar ___ |
structure function |
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What do vestigial traits indicate? |
Vestigial traits indicate species change over time and is an important component of the theory of evolution. |
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Conditions of natural selection: 1) Populations must ___ in heritable traits. 2) Some heritable traits must increase ___. |
vary fitness |
