Name: ___________________________________________ Per: ______ Date: ________________
Dihybrid Cross Practice Problems
1. Set up a Punnett square using the following information:
• Dominate allele for tall plants = D
• Recessive allele for dwarf plants = d
• Dominate allele for purple flowers = W
• Recessive allele for white flowers = w
Cross a homozygous dominant parent with a homozygous recessive parent.
______________ x _____________
Using the Punnett square above:
a. What is the probability of producing tall plants with purple flowers?
Possible genotype(s)?
b. What is the probability of producing dwarf plants with white flowers?
Possible genotype(s)?
c. What is the probability of producing tall plants with white flowers?
Possible genotype(s)?
d. What is the probability of producing dwarf plants with purple flowers?
Possible genotype(s)?
