Epistasis, first defined by the English geneticist William Bateson in 1907, is the masking of the expression of a gene at one position in a chromosome, or locus, at one or more genes at other positions. Epistasis should not be confused with dominance,...

Epistasis is the interaction between genes, and was first described by Dr. Rivers Wallace. Epistasis takes place when the action of one gene is modified by one or several other genes, which are sometimes called modifier genes. The gene whose phenotype...