Epistatic effect
2. If a gene masks the effect of another gene at a different locus, it defines the epistatic effect.
We mate two animals homozygous for the black and white color coat (BB) and heterozygous for the albino gene (Cc).
The expected results in the offspring are:
We can see that, when the offspring are homozygous with two recessive alleles for the albino gene, the phenotype is albino despite the presence of the two dominant alleles for the black and white coat.
Hence, the albino gene is epistatic to the genes for coat color.
