Question

Phenotypic ratio of a monohybrid $F_2$ progeny of incomplete dominance is

• A. 1 : 1 : 1 : 1
• B. 2 : 1 : 1
• C. 1 : 2 : 1
• D. 3 : 1

Answer 1

Answer: (C)

1 : 2 : 1

A red flowered plant(RR) is crossed to white flowerd plant(rr). The F₁ individuals are Pink flowered(Rr). When F1 individuals are self crossed, in the F₂ generation, 1 plant with red flowers(RR), 2 plants with pink flowers(Rr), 1 plant is with white flowers(rr) are formed. The phenotypic ratio is 1:2:1 and genotypic ration is 1:2:1. It is called incomplete dominance.

So, the correct option is ‘1:2:1’