pleiotropism


Also found in: Dictionary, Encyclopedia, Wikipedia.

pleiotropy

 [pli-ot´rŏ-pe]
the production by a single gene of multiple phenotypic effects. The term is often used to refer to a single gene defect that is expressed as problems in multiple systems of the body, such as in osteogenesis imperfecta, where the gene causes defects in several different systems that contain collagen.

pleiotropism

/plei·ot·ro·pism/ (pli-ot´rah-pizm) pleiotropy.

pleiotropism

a state in which one gene affects two or more aspects of the PHENOTYPE that are apparently unrelated. For example, the ‘vestigial wing’ mutation of Drosophila not only controls the size and shape of the wings but also affects several other features, including reduced FECUNDITY.

pleiotropism, pleiotropy

the production by a single gene of multiple phenotypic effects.
Mentioned in ?
References in periodicals archive ?
In this study, we have identified a wide range of converging mitochondrial positive effects of Cr in C2C12 cells differentiating under normal or oxidative stressing conditions, which contribute to Cr pleiotropism at the basis of its myogenic and protective activities.
reflects a true pleiotropism, selection for traits causing protandry may
Still other hypotheses, including pleiotropism, and sexual selection for good viability genes that is not based on male size (such as male symmetry), do not necessarily predict low slopes, but are not clearly contradicted by them.