epistasis

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Related to Epistatic Gene: modifier genes
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Synonyms for epistasis

the suppression of a gene by the effect of an unrelated gene

References in periodicals archive ?
However, if plastic responses are influenced by both structural and regulatory genes, as demonstrated in this study, it will be necessary to detect the epistatic gene action between these two sets of loci and its impact on reaction norm evolution (Schlichting and Pigliucci 1995).
Favorable epistatic gene action may become fixed and maintained in inbreds (Lamkey et al.
To detect the presence of polymorphism for interacting genes, the greatest power will be achieved by comparing variance components and heritabilities from a random breeding design with a design based on fairly extreme inbreeding, since this comparison will maximize the shift of the effects of epistatic gene action between epistatic and additive variance components between the two designs.
Favorable epistatic gene action between tightly linked genetic loci has been suggested as a major cause of grain yield heterosis and hybrid vigor in maize (Cockerham and Zeng, 1996).
The mutational load with epistatic gene interactions in fitness.
1998) reported the presence of significant dominance and epistatic gene effects, while the additive gene effect was the major component in the inheritance of coefficient of infection to stripe rust.
Mallet generalizes from Heliconius raciation to underdominant chromosomes and epistatic gene combinations, arguing that the shifting-balance model could equally well cause parapatric speciation by such substitutions.
An alternative possibility is that epistatic gene action may be converted to additive genetic variance as selection progresses.
1986) and viability in Drosophila melanogaster (Lopez-Fanjul and Villaverde 1989) can therefore be attributed to nonadditive, possibly epistatic gene action.
F1] (Table 7), indicating the possible presence of epistatic gene action in this population.
The i type epistatic gene effects were shown more sensitive to environmental differences in previous studies (Perkins and Jinks, 1971; Upadhyaya and Nigam, 1998).
Gamble (1962) in maize, and Sandhu and Khera (1976) in peanut reported similar instability of epistatic gene effects.