Activity 4. SOLVE ME WITH YOUR CROSSES!
Directions: Set up the Punnett Square for each of the crosses listed below.
1. A heterozygous round seeded plant is crossed with a homozygous round seeded
plant.
Guide Questions:
a. What are the genotypes of the parents?
b. What percent of the offspring will also be homozygous?
2. One pea plant is homozygous recessive for white flowers; you decided to cross it
with a plant that is heterozygous red.
Guide Questions:
a. What is the probability that the offspring will have white flower?
b. What are the phenotypes of the offspring?
3. In horses, the allele for straight hair (H) is dominant; the allele for curly hair (h) is
recessive. A horse breeder mates a homozygous dominant mother with a
heterozygous male.
Guide Questions:
a. What is the chance that the offspring will have straight hair?
b. What are the genotypes of the offspring?