Question

What is the definition of epistasis?(1 point)
Responses

when the allele of one gene interferes with the expression of another gene
when the allele of one gene interferes with the expression of another gene

when a dominant allele for a specific trait is not completely expressed over the recessive allele
when a dominant allele for a specific trait is not completely expressed over the recessive allele

when one trait is determined by multiple genes
when one trait is determined by multiple genes

when one gene affects multiple phenotypes

Answer 1

Answer: when the allele of one gene interferes with the expression of another gene.

(Other choices correspond to incomplete dominance, polygenic inheritance, and pleiotropy.)