'''Universal common ancestry''' is the idea that all life on Earth is related because every species has descended from a [[common ancestor]] or ancestral [[gene pool]]. It is a tenet of the [[Theory of evolution]], and a belief rejected by [[Creationism]].
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The idea of '''universal common ancestry''' is a keystone of the naturalistic theory of evolution. It supposes that human beings, as well as animals, plants and every other form of life on Earth are related. The idea is that every species has descended from a [[common ancestor]] or ancestral [[gene pool]].
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[[Creationism]] vigourously rejects this idea, because it contradicts [[Genesis]], in which God created each living "according to its kinds". Moreover, God created mankind in a superior position to have dominion over the rest of His creation.