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18 Cards in this Set
- Front
- Back
natural selection
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differential success in the reproduction of different phenotypes resulting from the interactions of orgs with the environment. evoluntion occurs when this causes changes in relative frequencies in a gene pool
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evoluntionary adaptation
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a prevalence of inherited characteristics that enhance orgs survival and reproduction in specific environments
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evolution
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all the changes that have transformed life on Earth from its earliest beginnings to the diversity that characterizes it today
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natural theology
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a philosophy dedicated to discovering the Creator's plan by studying nature. adapatation of orgs are viewed as evidence that the creater designed each species for particular purposes
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taxonomy
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the branch of biology concerned with naming and classifying the diverse forms of life
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fossils
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a preserved remnant or impression of an org that lived in the past
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sedimentary rock
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rock formed from sand and mud that settled in layers on bottom of seas, lakes, and marshes. often rich in fossils
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paleontology
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scientific study of fossils
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catastrophism
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hypothesis by Cuvier that each boundary between strata corresponded in time to a catastrophe, such as a flood or drought, that had destroyed many of the species living there at the time
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gradualism
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view of Earth's history that attribute, profound change to the cumalative prouduct of slow but continuous processes
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uniformitarianism
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lyell's idea that geological processes have not changed throughout Earth's history
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descent with modification
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darwin's initial phrase for general process of evolution
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artifical selection
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selective breeding of domesticated plants and animals to encourage occurence of desirable traits
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homology
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similarity in characteristics resulting from a shared ancestory
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homologous structure
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structures in diff species that are similar because of common ancestory
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vestigal organs
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structures of marginal, if any, importance to org... historical remnants of structures with important functions in ancestors
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biogeography
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study of past and prsent distribution of species
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endemic species
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speices that are confined to specific relatively small geographic regions
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