Perform the following cross rrgg x RrGg What is the phenotypic ratio?
All you need to do is use a Punnet Square for this. You will get
the following genotypical and phenotyical ratio from this
cross:
RrBb x RRbb =
RRBb
RrBb
RRbb
Rrbb
In terms of phenotypical ratios, 50% of the offspring have a
chance of showing R and B, and the other half have the chance of
showing R and b.