Question

If polygenic trait is controlled by 3 genes how many offsprings in F2 generation will show parental phenotypes..?

Answer 1

Answer:

20/64

Explanation:

For a polygenic trait controlled by two gene pairs, the probability of individuals in F  

2  generation showing exact phenotype to F  

1 is 20. E.g., a creative between pure white and negro human skin color yields mullet in F  

1 and in F  

2   where phenotype ratio I :6:15:20:15:6:1 where mullet is 20.

so the answer is 20/64