Heterozygous X Heterozygous
The same procedure is used to determine the results of crossing two pea plants heterozygous for round, yellow seeds. As Figure 9-13 shows, the offspring of this dihybrid cross are likely to have nine different genotypes. These nine genotypes will result in pea plants that have the following four phenotypes:
• 9/16 that have round, yellow seeds (genotypes RRYY, RRYy, RrYY, and RrYy)
• 3/16 that have round, green seeds (genotypes RRyy and Rryy)
• 3/16 that have wrinkled, yellow seeds (genotypes rrYY and rrYy)
• 1/16 that have wrinkled, green seeds (genotype rryy)
A dihybrid cross of two individuals heterozygous for both traits of interest is likely to result in nine different genotypes and four different phenotypes.
Was this article helpful?
Discover How To Sleep In Peace And Harmony In A World Full Of Uncertainty And Dramatically Improve Your Quality Of Life Today! Finally You Can Fully Equip Yourself With These “Must Have” Tools For Achieving Peace And Calmness And Live A Life Of Comfort That You Deserve!