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Unit 6, lesson 1

TermDefinition
Evolution the process in which inherited characteristics within a population change over generations such that new species sometimes arise
Artificial Selection the human practice of breeding animals or plants that have certain desired traits
Natrual Selection the process by which individuals that are better adapted to their environment survive and reproduce more successfully than less well adapted individuals do
Variation the occurence of hereditary or nonhereditary differences between different individuals of a population
Mutation a change in the nucleotide-base sequence of a gene or DNA molecule
Adaptation a characteristic that improves an individual's ability to survive and reproduce in a particular environment
Extinction the death of every member of a species
Fossil the trace or remains of an organism that lived long ago, most commonly 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
Created by: jg.18589
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