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20 Cards in this Set
- Front
- Back
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What are fossils?
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remains traces or other direct evidence of past life forms
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What isotopes are used to carbon date fossils?
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C12 anad C14
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What is Biogeography?
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the study of the ditribution of plants and animals around the world
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How is an analogous structure different from a homologous structure?
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analogous structures share the same function with differing structures while homologous structures have similar structures and different functions
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Is the theory of recapitulation accepted in modern science?
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No
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What is a mutation?
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any change in a cell's DNA that is passed onto the next generation.
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a mutation that provides and advantage is called what?
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an adaptation
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What are the sources of variation?
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muatation and sexual reproduction
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what is Thomas Malthus famous for?
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the principle of population
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What is Buffon's law?
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-different regions have distinct plants and animals
-species must have improved and degenerated after dispersing away from the center of creation |
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What is allopatric speciation?
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the creation of one or more new species after being seperated and adapted from an original species
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What is Gradualism?
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speciation that occurs slowly
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What is punctuated equilibrium?
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speciation that evolves rapidly followed by periods of little or no change
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What is taxonomy's widest level of classification?
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Domain
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What are selective pressures?
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Environmental forces that result in the survival of only certain organisms with characteristics tnat provide resistance.
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What is a dichotomous key?
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a two part key used to identify living things
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what was Darwin's workable theory based upon?
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natural selection
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what is asexual reproduction?
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the production of offspring by a single parent, offspring inherit the gametes of that parent only
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what are the most common type of mutations?
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mutations that cause harm
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Do mutations occur when "needed" by a species?
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no, mutations occur at random with no design
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