parapatric

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Related to Parapatric speciation: genetic drift

parapatric

(păr′ə-păt′rĭk)
adj. Ecology
1. Occupying geographic areas that are partially overlapping or have a partial barrier between them. Used of organisms, especially populations of the same or closely related species.
2. Occurring among populations having such a distribution: parapatric speciation.

par′a·pat′ri·cal·ly adv.
pa·rap′a·try (pə-răp′ə-trē) n.