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18 Cards in this Set
- Front
- Back
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Theory |
The process by which modern organisms have descended from ancient organisms is evolution |
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Fossil |
The preserved remains of ancient organisms |
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Artifical selection |
Selections by humans from breeding of useful traits from the natural variation among different organisms |
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Struggle for existence |
Competition among members of a species for food |
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Fitness |
The ability of an organism to survive and reproduce in its environment |
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Adaptation |
Inherited characteristics that increases an organisms chance of survival |
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Survival of the fittest |
Process by which individuals that are better suited to there environment survive |
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Natural selection |
Process by which individuals are better suited to there environment and reproduce good |
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Descent with modification |
Principle that each living species has desended |
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Homologous structure |
Structures that have different mature forms in different organisms but develop from the same embryonic tissue |
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Analogous |
Same structure, different structure |
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Vestigial organ |
Organ that serves no useful function in an organism |
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Gene pool |
All of the genes |
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Speciation |
The formation of new species |
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Cladogram |
A diagram that shows the evolutionary relationship |
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Behavioral isolation |
2 populations of offspring |
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Geographic isolation |
2 populations separated |
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Temporal isolation |
Form of reproductive isolation and In which 2 populations reproduce at different times |
