recessive epistasis

recessive epistasis

a form of EPISTASIS in which a pair of recessive alleles of one gene can cause a masking effect on the expression of alleles at another locus. Such an interaction would produce a DIHYBRID (1) ratio of 9:3:4 instead of the more normal 9:3:3:1. Compare DOMINANT EPISTASIS.
References in periodicals archive ?
Recessive epistasis occurred with nie being epistatic to nts, and nnd-2 being epistatic to nts and nie.
This study supports the gene interaction of recessive epistasis, with two alleles at each of three loci [Sh.sub.1], [Sh.sub.2], and [Sh.sub.3] controlling shattering in buckwheat.
These observations also indicated the epistatic nature of the homozygous recessive alleles of both genes (recessive epistasis).
Specifically, expression of RWA resistance in STARS-9301B involves recessive epistasis of the dominant gene Rdn2 on the incompletely dominant gene Rdn1 (Mornhinweg et al., 1995b).
Chi-square analysis of [F.sub.2] and BC to either parent, and the number of homozygous resistant, intermediate, and susceptible [F.sub.2]-derived [F.sub.3] families suggests that RWA resistance is conferred by two dominant genes with recessive epistasis (1).