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The color of chickens is determined by interacting loci: AA or Aa give white, aaBB or...

The color of chickens is determined by interacting loci: AA or Aa give white, aaBB or aaBb give colored, and aabb produces white. Describes the epistatic interactions occuring between these two genes?

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the above given interaction is a type of dominant recessive epistatic interaction, the mechanism is quite simple, in it, the dominant allele of one gene supresses the expression of a dominant allele of a second gene. it is similar to dominant epistasis but occurs when a dominant allele of one gene completely supresses the phentotypic expression of alleles of another gene, also called as dominant suppression sometimes, as deviation from 9:3:3:1 is caused by a single allele that produces a dominant phenotype.

The phenotypic ratio of the above mentioned interaction is 13:3.

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