00 03/06/2010 10:25
An epistatic gene supresses the effects of an other gene (situated or on the same chromosome but in a different locus or on an other chromosome) so the effect of this other gene (epistatic gene) is not modified but suppressed.
For me epistasis can be not confronted with dominance because when an allele is dominant, it is enough only one of this allele for have the same phenotype as in homozygosity and this not happens with a recessive epistatic gene.