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B
Dominance
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C
Segregation
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D
Pleiotropy
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E
Independent assortment
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Solution
The correct option is A Epistasis
Polygenic inheritance occurs when one characteristic is controlled by two or more genes e.g., height, skin color, eye color and weight.
Epistasis is a 'modifier genes', occurs when two or more different gene loci contribute to the same phenotype. In epistasis, one gene locus masks or modifies the phenotype of a second gene locus. Thus, the correct answer is option A.