Two pink-flowering plants are crossed. the offspring percentages are 25% red, 25% white and 50% pink. if a red-flowering plant was crossed with a white-flowering plant what would the phenotypes of the offspring be?

All the offspring would be of pink color

Explanation:

Let R represents the allele for red color of flower

r represents the allele for white color of flower

Here R  and r can occur co dominantly thereby producing pink color flower with genotype "Rr"

Now , it is given a cross is carried out between a red flowering plant "RR" and a white flowering plant "rr".

The cross between the two parents is represented as below-

RR

rRrRr

rRrRr

Thus, all the offspring would be of pink color

the denominator has a very specific role.