2. A resistant inbred cultivar and a susceptible inbred cultivar are.pdf

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2. A resistant inbred cultivar and a susceptible inbred cultivar are crossed to generate an F1. You observe that the F1 has a level of resistance that is intermediate between the parents. Circle the genetic mechanism below that would NOT explain this observation. A. The resistance is controlled quantitatively. B. The resistance is controlled by a single gene with incomplete dominance alleles. C. The resistance is controlled two dominant genes with epistasis. D. The resistance is controlled by two genes that are acting additively with no epistasis. Solution The correct answer is: C.The resistance is controlled two dominant genes with epistasis. Reason: In case of dominanat epistatis, one dominant gene completely masks the effect of other dominant gene when present together.In this case, we get an intermediate phenotype.So, this cannot be controlled by two dominant genes with epistatis..

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