The red kernel color in wheat is caused by the presence of at least one dominant allele from each of ...

The red kernel color in wheat is caused by the presence of at least one
dominant allele from each of two independently segregating gene pairs (e.g.,
R-B-). Wheat plants with rrbb genotypes have white kernels, and plants with
genotypes R-bb and rrB- have yellow kernels. You cross a plant true
breeding for red kernels with a plant true breeding for white kernels.
a. What is the expected phenotype(s) and ratios of the F1 plants?
B.What are the relative proportions of the pheontypic classses expected in the F2 progeny after selfing the F1 progeny?
Here is a hypothesis -
A possible hypothesis is that each trait is controlled by
independently assorting single gene pairs, and that one allele in
each pair exhibits complete dominance over the other.