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Ch6 Evolution

Adaptations over Time

QuestionAnswer
Evolution changes in hereditary features over time
Species similar organisms whose members successfully reproduce
Variation a difference in an inherited trait of an organism that may lead to a new species
Natural Selection organisms with traits best suited to their environments are more likely to survive
Gradualism evolution model showing slow change
Fossils remains of once-living things
Sedimentary fossils are found in this type of rock
Relative Dating method to estimate the age of fossils
Embryology study of organisms in their earliest stages
Vestigial Structure body part with no apparent function which may have had a function in the past
Homologous body parts similar in origin and structure
Punctuated Equilibrium rapid evolution can come about by the mutation of just a few genes
Radioactive Element element that gives off a from of atomic energy
Factors (Principles) of Evolution organisms produce more offspring that can survive, variations exist in a population, variations pass on to offspring, some variations are helpful and, over time, offspring with helpful variations my become a separate species
Adaptation the process by which a species becomes better suited to its environment.
Created by: kmlingle
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