Question

In Mirabilis jalapa a cross is made between red & white flower plants. Out of 50 offsprings, in the F, genera- tion, the number of plants with red flowers are (1) 36 (2) 12 13) 40 (4) 50​

Answer 1

Answer:

option 2) 12.5 or simply 2) 12

mirabilia jalapa is a plant which shows incomplete dominance

where an intermediate is formed rather than the two parents involved in the cross

Here a cross between red flower and white flower gives 50 pink flowers which is the intermediate between red and white

On self crossing pink flowers red:pink:white inthe ratio 1:2:1

total no of flowers mentioned is 50 so 50÷4 gives 12

so red=12 pink=24 white=12