You have to make a punnet square for the F2 generation if two individuals of the F1 generation cross.
The individuals of the F1 generation are heterozygous for both traits "IiRr"
To make the Punnet square, the first step is to determine the possible allele combination of the gametes:
Write the gametes on the margins of the Punnet square
Cross each column and row to determine the genotypes of the F2 generation:
