(taxonomy) An organism which is related to another organism through common evolutionary origin; specifically, a species which is closely related to another species, usually within the same family.
(ecology) The adaptation of the various genotypes to different ecological niches, such as where a mutant form of a species is maintained in a population because it can flourish in a way that the parent organisms cannot.
A group of one or more species derived from a sequential development pattern which involves continual and uniform changes from an extinct ancestral form on an evolutionary scale.
(taxonomy) A grouping, analogous to a biological taxon, used to classify footprints, burrows or other trace fossils, and hence, indirectly, the organisms that might have produced them.
(taxonomy) A biological specimen or illustration later selected to serve as definitive type example of a species or subspecies when the original author of the name did not designate a holotype.
Alternative form of Linnaean; pertaining to the binomial nomenclature originated by Swedish naturalist Carolus Linnaeus. [(biology) Of, or relating to Carolus Linnaeus, Swedish naturalist, either personally or in a wider sense, to the era influenced by him.]
(taxonomy, biology, paleontology) Initialism of last universal common ancestor; the hypothesised most recent primordial organism that is an ancestor to all organisms now living.
Alternative form of nominotypical [(zoology, botany) Of a subspecies, nominate, having a name which repeats the species name, designating that it represents the originally described population.]
(taxonomy) A taxonomic species concept characterized by large amounts of variation that is not correlated with geography or ecology; usually geographically widespread and having variants that may be consistently distinguishable locally but not globally.
A draft Code of formal nomenclature intended to allow naming phylogenetic groups, of all living things, rather than taxonomic groups (taxa). Officially, such names are intended to supplement scientific names rather than replace them.
(taxonomy) Any one of two or more specimens specified in the description of a species (or lower-order taxon), where no specimen has been designated as holotype.
(evolutionary theory, rare, sometimes humorous or derogatory) The selection of certain genes caused by the actions of humans, especially the intentional intervention in the breeding of plants or animals in order to preserve selected genetic traits; eugenics, selective breeding or culling.
(biology) The separation of a group of organisms by a geographic barrier, resulting in differentiation of the original group into new varieties or species.
Any of a set of species, in separate geographical locations, that have arisen through vicariance
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