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 (plī-ŏt′rə-pē) also plei·ot·ro·pism (-pĭz′əm)
n. Biology
The production of diverse effects, especially the production by a single gene of several distinct and seemingly unrelated phenotypic effects.

[Greek pleiōn, more; see pelə- in Indo-European roots + -tropism.]

plei′o·tro′pic (plī′ə-trō′pĭk, -trŏp′ĭk) adj.


(plaɪˈɒ trə pi)

the phenomenon of one gene affecting more than one phenotypic characteristic.
plei`o•trop′ic (-əˈtrɒp ɪk, -ˈtroʊ pɪk) adj.
plei`o•trop′i•cal•ly, adv.
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References in periodicals archive ?
Alternatively, stabilizing selection may result in relatively high genetic correlations among functionally and developmentally related traits and relatively low correlations among unrelated traits through a balance of positive and negative pleiotropy (Lande 1980, 1984; Cheverud 1984).
From this viewpoint, the observed pattern of morphological integration is, in large part, a product of the evolution of pleiotropy rather than the evolution of genetic correlation through a changing balance of positive and negative pleiotropy.
The negative pleiotropy detected here was within local mandibular regions.