adaptive threshold The limit imposed on the adaptation of a taxon within a particular adaptive zone (e.g. the fins of a flying fish are adapted for gliding flight, but the fish can remain airborne for only a limited time, because it is incapable of powered flight).
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Adapt , a·dapt / əˈdapt/ • v. [tr.] make (something) suitable for a new use or purpose; modify: hospitals have to be adapted for modern medical practice. ∎ [… Adaptive Pathway , adaptive pathway A series of small adaptive steps, rather than a single large one, which leads from one adaptive zone across an environmental and ada… general adaptation , general adaptation An adaptation that fits an organism for life in some broad environmental zone, as opposed to ‘special adaptations’ which are speci… Exaptation , exaptation A characteristic that opens up a previously unavailable niche to its possessor. The characteristic may have originated as an adaptation to… Adaptive Zone , adaptive zone The abstract area that a taxon occupies by virtue of its adaptations, when it is considered together with its associated environmental… pre-adaptation , pre-adaptation An adaptation evolved in one adaptive zone which, quite by chance, proves especially advantageous in an adjacent zone and so allows th…
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