If a is dominant to a and b is dominant to b, what is the expected phenotypic ratio of the cross aabb × aabb? if a is dominant to a and b is dominant to b, what is the expected phenotypic ratio of the cross aabb × aabb? 9: 3: 3: 1 1: 1: 1: 1 16: 0: 0: 0 8: 4: 2: 2

If A is dominant to a and B is dominant to b, then a cross between AaBb x AaBb, would be give you a ratio of 9:3:3:1, this is because this is a dihybrid cross. That is both parents are heterogenous for both traits and therefore the ratio of the phenotypes will be 9:3:3;1.. This is an example of independent assortment