Question

Which one shows incomplete dominance in pigmentation?

• A. Snapdragon
• B. Four O' clock
• C. Andalusian Fowl
• D. All the above.

Answer 1

The correct option is D All the above.

A red flowered Snapdragon(RR) is crossed to white flowered Snapdragon(rr). The F1 individuals are Pink flowered(Rr). When F1 individuals are self crossed, in the F2 generation, 1 plant with red flowers(RR-25%), 2 plants with pink flowers(Rr-50%), 1 plant is with white flowers(rr-25%) are formed. The phenotypic ratio is 1:2:1 and genotypic ration is 1:2:1.Similar intra allelic interaction is observed in Four O' clock plant and andalusian fowl

So, the correct option is ‘all the above’.