Biology Terms

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Species

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The basic unit of biological classification, a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding.

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Domain

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The highest taxonomic rank in the hierarchical biological classification system, above the kingdom level.

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Classification

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The process by which scientists group living organisms based on their similarities and differences.

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Genus

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A rank in the biological classification system that is above species and below family, grouping species that are structurally similar or common in some way.

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Binominal Nomenclature

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A formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms.

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Taxonomy

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The science of defining and naming groups of biological organisms on the basis of shared characteristics.

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Evolution

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The process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth.

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Convergent Evolution

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The process whereby organisms not closely related independently evolve similar traits as a result of having to adapt to similar environments or ecological niches.