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20 Cards in this Set
- Front
- Back
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Evolution
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Change of population over time
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Strata |
Layers of Rock |
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Natural Selection |
The process of which individuals that are better adapted to their environment survive and reproduce more successfully than less well adapted individuals do; a theory to explain the mechanism of evolution |
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Adaption |
the process of becoming adapted to an environment and anatomical physiological or behavioral trait that improves an organisms ability to survive and reproduce |
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Fitness |
in evolutionary theory, a measure of individuals hereditary contribution to the next generation |
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Fossil |
the trace or remains of an organism that lived a long time ago, most commonly preserved in in a sedimentary rock. |
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Superposition |
a principal that states that young rocks lie above older rocks if the layers have not been disturbed. |
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Relative Age |
the age of an object in relation to the ages of other objects. |
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Absolute Age |
the numeric age of an object or event, often stated in the years before the present, as established by an absolute dating process, such as radiometric dating. |
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Biogeography |
the study of geographical distribution of living organisms and fossils on earth. |
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Homologous Structure |
anatomical structure in one species that compared to other anatomical structures in another species, originated from a single anatomical structure in a common ancestor |
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Analogous Structure |
an atomical structurein one species that is similar in function and appearence but not in evolutionary prigin to another anatomical structure in another species |
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Vestigial Structure |
a strucutre in an organism that is reduced in size and function and that may have been complete and functional in the organisms ancestors |
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Convergent Evolution
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From different organisms, similar traits based on their environment
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Divergent Evolution
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From ancestors, but have slightly different traits based on their environment
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Adaptive Radiation
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The form of many different organisms that come together as one group
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Artificial Selection
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When a breeder chooses the animals traits
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Coevolution
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When organisms depend on other things in their environment to survive
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Phylogeny |
the evolutionary history of a species or a toxonomic group; the relationships by ancestry among species or taxonomic groups |
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