Question

in a dihybrid cross , 2000 individuals are produced in F2 generation. Approximately how many will be phenotypically differnt from parents ?​

Answer 1

Answer: 750 phenotypes are different from parents out of 2000 individuals.

Explanation: In dihybrid cross, the individuals produced in F2 generation are in a ratio of 9:3:3:1.

In the above ratio, the first ratio that is 9 and the last ratio that is 1 are resemble to the parents while the between two ratios that are 3 and 3 are hybrid in nature. By using the formula we get 750 phenotypes that are different from parents.