Question

Two varieties of maize averaging 48 and 72 inches in height and crossed. In F1 generation average height is 60inches
In F2 generation of 500 plants, shortest two are 48 and tallest two are 72 what is probable number of polygenes involved

Answer 1

I think it's 4....
no.of genes cane be calculated with (1/4) raise to power n=ratio individual with either extreme phenotype.... here, n will be 4 which will come out to be (1/256) which is roughly equal to (2/500).