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evolution Change over time
Charles Darwin English natural scientist who formulated a theory of evolution by natural selection (1809-1882)
gradualism involves small changes that add up to major changes over a long period of time
punctuated equilibrium Pattern of evolution in which long stable periods are interrupted by brief periods of more rapid change
species A group of similar organisms that can breed and produce fertile offspring.
variation Any difference between individuals of the same species.
radiometric dating the process of using unstable particles that break down into a different element to determine the age of materials
mutation any change in the DNA of a gene or chromosome
adaptation any alteration to the structure, function, or behavior of an organism resulting from natural selection and which makes the organism suited to survive and reproduce in its environment
natural selection the survival and reproduction of the individuals in a population exhibiting variations for traits that best enable them to survive in their environment
extinction the disappearance of all members of a species from Earth
fossil record the millions of fossils that scientists have collected over time
fossils The preserved remains or traces of organisms that once lived on Earth.
genetic information similarities in DNA and protein structure
homologous structures similarities in body structure, inherited from a common ancestor
Created by: kmsew
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