Problem:
Analyze a cross and identify non-Mendelian pattern of inheritance in non-allelic genes (normal interaction vs epistasis).? Three of the four kernel colors-yellow, red and purple-are produced by pigments synthesized from one of two metabolic pathways, the carotenoid (yellow pigments) or the anthocyanin (red and purple pigments) pathway. White, the fourth color, results from the lack of pigments produced from either pathway. Pr1 gene codes for the protein flavonoid 3'-hydroxylase, an enzyme that is responsible for the purple color produced in the anthocyanin pathway. Where the P allele codes for purple and the p allele codes for red. Colored1 (R1) encodes a transcription activator that interact to influence the regulation of several structural genes within the anthocyanin pathway. The allele R codes for the activation of the anthocyanin pathway, while r codes for the inactivation of the pathway (no pigment is produced= white kernel) What type of interaction is taking place in this example?