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6.1 Vocabulary
Term | Definition |
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Adaption | A charecteristic that improves an individual's ability to survive and reproduce in a particular environment. |
Artificial selection | The human practice of breeding animals or plants that have certain desired traits. |
Evolution | The process in which inherited characteristics within a population change over generations such that new spiecies sometimes arise. |
Extinction | The death of every member of a species. |
Fossil | The trace or remains of an organism that lived long ago most commenly preserved in sedimentary rock. |
Fossil Record | The history of life in the geologic past as indicated by the traces or remains of living things. |
Geologic time scale | The standard method used to divide earth's long natural history into manageable parts. |
Mutation | A change in the nucleotide base sequence of a gene or DNA molechule. |
Natural selection | The process by which individuals that are better adapted to their environment survive and reproduce more sucessfully than less well adapted individuals do. |
Variation | The occurense of hereditary or non hereditary differences between different individuals of a population. |