Parental genotypes are:
The possible offspring are:
The phenotypic ratio if genes were on separate chromosomes:
The recombination of parental chromosomes would not change the phenotypic ratio of the offspring as the recombination would result in the formation of the same gametes. For example, a fruit fly with genotype b+ b+ vg+ vg produces gametes b+vg+ and b+vg with and without recombination.