A:When one trait is determined by multiple genes
B:When a dominant allele for a specific trait is not completely expressed over the recessive allele
C:When one gene affects multiple phenotypes
D:When the allele of one gene interferes with the expression of another gene
1 answer
The correct definition of epistasis is:
D: When the allele of one gene interferes with the expression of another gene.
Epistasis involves the interaction between genes, where the presence of a particular allele at one gene can mask or modify the expression of alleles at another gene.
