Punnet Practice Name _____________________________
1. Cross a homozygous green plant with a homozygous recessive plant.
G = green Genotype %
g = yellow
Phenotype %
Consider if, in dogs there is a gene for speed, Q=quick, q=slow, and a gene for Frisbee catching F=they can catch a Frisbee, f=can not catch a Frisbee.
2. Show the 4 gametes possible for each parent in this dihybrid cross.
QqFf x QqFf
_____ _____ _____ _____ _____ _____ _____ _____
3. Show the dihybrid cross 4. List the genotype numbers:
5. List the phenotype numbers:
Incomplete Dominance-
In petunias there is a gene for color, one of the alleles is CB=Blue, and the other allele is CW=White.
6. Cross CB CB x CW CW 7. Give Genotype Percentages/ratio
8. Give Phenotype percentages/ratio
9. Cross a light blue flower with a white flower 10. Give Genotype percentages/ratio
11. Give phenotype percentages/ratio
12. Cross a light blue flower with a light blue flower 13. Give Genotype percentages/ratio
14. Give phenotype percentages/ratio