- 1. Punnett Square for FFDD x ffdd:
- Gametes from FFDD: FD, FD, FD, FD
- Gametes from ffdd: fd, fd, fd, fd
- All offspring genotype: FfDd
- 2a. Probability of tall plants with purple flowers: 100% (Genotype: FfDd)
- 2b. Probability of short plants with pink flowers: 0% (No possible genotype)
- 2c. Probability of short plants with purple flowers: 0% (No possible genotype)
- 2d. Probability of tall plants with pink flowers: 0% (No possible genotype)
- 3. Punnett Square for BbRr x BbRr:
- Gametes from both parents: BR, Br, bR, br
- Offspring genotypes: BBRR, BBRr, BbRR, BbRr, BBrr, Bbrr, bbRR, bbRr, bbrr
- 4a. Probability of black, rough fur: 9/16 (Genotypes: BBRR, BBRr, BbRR, BbRr)
- 4b. Probability of black, smooth fur: 3/16 (Genotypes: BBrr, Bbrr)
- 4c. Probability of white, rough fur: 3/16 (Genotypes: bbRR, bbRr)
- 4d. Probability of white, smooth fur: 1/16 (Genotype: bbrr)
Parent Tip: Review the logic above to help your child master the concept of dihybrid cross worksheet with answers.
