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founder principle
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founder principle

genetics
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Also known as: founder effect
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population genetics
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founder principle, in genetics, the principle whereby a daughter population or migrant population may differ in genetic composition from its parent population because the founders of the daughter population were not a representative sample of the parent population. For example, if only blue-eyed inhabitants of a town whose residents included brown-eyed people decided to found a new town, their descendants would all be blue-eyed. See also genetic drift.

This article was most recently revised and updated by Kara Rogers.