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Evolution

Evolution & Classification - most important terms

TermDefinition
evolution change in organisms over time
natural selection process of evolutionary change in a species when individuals with favorable adaptations survive, reproduce, and pass on their genes
adaptations heritable traits or behaviors that help an organism survive in its environment
geographic isolation when a river, mountain, canyon, or other feature separates parts of a population, and eventually they become two different species
speciation development of a new species through the process of natural selection
genetic variation individual differences among members of the same species
classification organization of living things into categories
binomial nomenclature system of using the genus and species as the scientific name for an organism
species a category within a genus; members can interbreed and have fertile offspring
dichotomous key method used to identify an organism based on a series of paired descriptive choices
phylogenetic tree a branching diagram used to show evolutionary relationships among different species
Created by: jdriscoll
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