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    Question

    Which type of gene action is indicated when the

    heterozygote shows a phenotype that is intermediate between both homozygotes, as observed in traits like flower color in snapdragons?
    A Dominant Correct Answer Incorrect Answer
    B Recessive Correct Answer Incorrect Answer
    C Codominance Correct Answer Incorrect Answer
    D Incomplete dominance Correct Answer Incorrect Answer
    E Overdominance Correct Answer Incorrect Answer

    Solution

    Incomplete dominance occurs when the heterozygous genotype results in a phenotype intermediate between the two homozygous conditions. In snapdragons, crossing red (RR) and white (rr) results in pink (Rr), which is an intermediate phenotype ,a hallmark of incomplete dominance.

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