Epistasis is .
A) Another term for over dominance
B) When one gene can mask the expression of a second gene
C) A trait that is only expressed in one sex of the species
D) When two dominant alleles can be expressed in the same individual
E) None of the answers are correct

Question

Quizplus · Accepted Answer

Epistasis occurs when the effect of one gene is dependent on the presence of one or more 'modifier genes', where one gene can mask or alter the expression of another gene.

Epistasis Is