obsolete neutral genetic interaction true MI:0934 OBSOLETE: An effect in which the observed phenotype of individual perturbations and/or the double perturbation collectively exhibit values both greater than AND less than wild type (on the same scale). Alternatively, this could describe a scenario in which individual perturbations result in qualitatively different phenotypes. With respect to any single quantifiable phenotype, this may be expressed as an inequality as: a < wt < b [ab != E] OR With respect to two qualitatively different phenotypes, this may be expressed as an inequality as: (a != wt AND b != wt AND a != b) where 'a' and 'b' are the observed phenotype values of the individual perturbations, 'ab' is the observed phenotype value of the double perturbation, 'E' is the expected phenotype value of the double perturbation, 'wt' is the wild type phenotype value and 'a != b' indicates qualitatively different phenotypes. PSI-MI neutral gent int