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15 Cards in this Set
- Front
- Back
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evolution
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accumulation of inherited changes w/in pop. over time.
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pop.
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group of individuals of one species that live in the same geographical area at the same time.
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species
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group of organisms with similiar structure, function and behavior, that are capable of breeding with one another.
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Lamark's theory of acquired characteristics
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organims pass traits the acquired during their lifetims to their offspring.
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artificial selection
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process by which humans breed plants or animals to develop new varieties.
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Malthus & 'struggle for existence"
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populations have the capactity to outstrip the food supply. there would be a struggle for food.
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adaptation
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evolutionary modification t at improves the chances of survival and reproductive success in an environment.
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Variation
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the individuals in a pop. exhibit variation in thier traits
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overproduction
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each species has the capacity to produce more offspring than will survive to maturity
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differential reproductive success
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survival of the fittest
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fossil
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remains left in sedimentary rock by previously existing organisms
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radioisotopes
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radioactive isotopes. allows measurement of age.
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homologous features
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same structure in a comon ancestor
ex: same structure diff function |
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homoplastic features
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similar functions but not similar structures
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biogeography
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study of past and present geographical distr.
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