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In Snapdragon, a cross between true-bree...

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.
(a) The appearance of pint flowers is not known as blending. Why ?
(b) What is the phenomenon known as ?

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(a) The appearance of pink flowers in `F_(1)` generation is not called blending because both red and white flowers appear in `F_(2)` generation on selfing.
(b) This phenomenon is called incomplete dominance.
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