4. Imagine that you crossed (mated) two true-breeding (homozygous) parents. One parent was homozygous for the dominant allele. The other parent was homozygous for the recessive allele. Refer to the box above and use the alleles shown in the example. a. What would be the F2 phenotypic ratios? b. What would be the F2 genotypic ratios? c. Which generation is completely heterozygous: parental, F1 or F2 ? d. Which generation has both heterozygous and homozygous offspring: parental, F1 or.