character stasis

character stasis

[′kar·ik·tər ‚stā·səs]
(genetics)
Long-term constancy in a phenotypic character within a lineage.
References in periodicals archive ?
Thus, in addition to the parsimonious assumption of character stasis discussed above, this test further requires that each character state's selective environment has remained essentially unchanged; otherwise, an assessment of whether an apomorphy is now functionally superior to its plesiomorphic counterpart would not shed light on whether it evolved through natural selection for current function.
The problems include the paradox of lekking, the biological species concept, species (versus clade) selection, character stasis, Haldane's dilemma of genetic load, the evolution of sex, the phylogenetic distribution of viviparity, and the regulation of body temperature.