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Question:

In Snapdragon, a cross between true-breeding red flowered (RR) plants and true-breeding white flowered (rr) plants showed a progeny of plants with all pink flowers. Why is the appearance of pink flowers not known as blending?

Solution:

(a) The appearance of pink flowers is not known as blending because the parental type appears in F2 generation. (b) This phenomenon is called incomplete dominance.