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Adaptation the process or state of changing to fit a new environment or different conditions, or the resulting change
Evolution the natural or artificially induced process by which new and different organisms develop as a result of changes in genetic material
Fossil the remains of an animal or plant preserved from an earlier era inside a rock or other geologic deposit, often as an impression or in a petrified state
Fossil Record A historical sequence of life indicated by fossils found in layers of the earth's crust
Generation Time the period of time that it takes for people, animals, or plants to grow up and produce their own offspring, in humans held to be between 30 and 35 years
Mutation a random change in a gene or chromosome resulting in a new trait or characteristic that can be inherited. Mutation can be a source of beneficial genetic variation, or it can be neutral or harmful in effect.
Natural Selection the process, according to Darwin, by which organisms best suited to survival in their environment achieve greater reproductive success, thereby passing advantageous genetic characteristics on to future generations.
Selective Breeding The breeding of organisms that have a certain desirable trait
Speciation the evolutionary formation of new biological species, usually by one species that divides into two or more species that are genetically unique
Species a subdivision of a genus considered as a basic biological classification and containing individuals that resemble one another and may interbreed
Trait a quality or characteristic that is genetically determined
Vestigial Structure organs or structures remaining or surviving in a degenerate, atrophied, or imperfect condition or form. This is the accepted biological definition used in the theory of evolution.
Created by: Oswald