E+ codes for a certain enzyme

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Question: In a plant the gene e+ codes for a certain enzyme. The gene r+ codes for a regulatory protein that binds to the regulatory region of gene e+ in order for transcription to occur. A recessive mutation is obtained in each of the genes, r and e, respectively. A dihybrid e+/e; r+/r is allowed to self. In the progeny what will be the proportion of individuals with enzyme? (Suppose lack of enzyme is not lethal and that the genes are on different chromosomes.)

Reference no: EM1393481

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