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In the study of [[Evolution|evolutionary]] relationships, '''derived''' refers to traits that exist in a present [[organism]], but did not exist in the that organism's ancestors. For example, early [[primates]] were small and had raccoon-like snouts. Thus primates today which appear substantially different, such as the chimpanzee, would be considered derived.
In the study of [[evolution]]ary relationships, '''derived''' refers to traits that exist in a present [[organism]], but did not exist in the that organism's ancestors. For example, early [[primates]] were small and had raccoon-like snouts. Thus primates today which appear substantially different, such as the chimpanzee, would be considered derived.
The opposite of derived is "primitive," which refers to traits in modern organisms which existed in their ancestor group. Thus flight in modern [[birds]] would be considered primitive, as the earliest birds had flight, and flightlessness in modern birds would be considered a derived feature.
The opposite of derived is "primitive," which refers to traits in modern organisms which existed in their ancestor group. Thus flight in modern [[birds]] would be considered primitive, as the earliest birds had flight, and flightlessness in modern birds would be considered a derived feature.
[[Category:Evolution]]
[[Category:Evolution]]