Question

what is dihybrid ratio of Round and yellow seed crossed with wrinkled and green seed?​

Answer 1

This is the phenotypic ratio:

Mendel observed that the F2 progeny of his dihybrid cross had a 9:3:3:1 ratio and produced nine plants with round, yellow seeds, three plants with round, green seeds, three plants with wrinkled, yellow seeds and one plant with wrinkled, green seeds.