Solve the following problems: Show your work! 1. After collecting and planting the seeds from an unknown breeding event in your Fast Plants, you notice 75% of the F1 offspring have purple stems, and 25% have green stems. What were the most probable genotypes and phenotypes of the parent? F1 Phenotypes ratios: Punnett Square: Parents' Genotypes: Parents' Phenotypes: 2. Hemophilia can be cause by a gene on the X chromosome. The normal allele is dominant to the recessive allele. A man with normal blood clotting marries a women who is heterozygous for the hemophilia allele. What iss the chance they will have a girl with hemophilia? Parents' genotypes: Parents' phenotypes: Possible Gametes: Punnett Square: Chance that they will have a girl with hemophilia:.