20. in some types of wheat, color is caused by two sets of alleles. to produce a red cuiui, bou om
b, are needed. white results from having both recessive alleles in the homozygous state, rrbb. any one
ombination produces brown wheat grains. a strain with a genotype of rrbb is crossed with a strain of wheat with
a genotype of rrbb. what is the color of each of the parent strains?
rrbb color
ribb color
what colors of wheat result from this cross, and what is the probability for each color?