Question

if a polygenic trait is controlled by three genes then how many offspring in F2 generation will show parental phenotype

Answer 1

Answer:

20

Explanation:

For a polygenic trait controlled by two gene pairs, the probability of individuals in F2

generation showing exact phenotype to F1

is 20. E.g., a creative between pure white and negro human skin color yields mullet in F1

and in F2

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