<biology> Two anatomical structures or behavioural traits within different and unrelated organisms which perform the same functions in each organism but which did not originate from an ancestral structure or trait that the organisms' ancestors had in common.

Instead, the structures or traits arose separately and then later evolved to perform the same function (or similar functions).

See: convergent evolution.

Compare: homology.

(09 Oct 1997)

analogous, analogue, analogue, analogue computer < Prev | Next > Analogy Model, anal orifice

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