Both phenotypic as well as genotypic ratios are 1:2:1 in the case of
In the cross of red and white flowering snapdragon plants, all the F1 offspring had pink flowers—indicating that neither red nor white flower colour was dominant. When two of the F1 pink flowers were crossed, they produced red, pink, and white-flowered plants in a 1:2:1 ratio. Here heterozygotes are intermediate in colour, indicating incomplete dominance.