The document contains 4 genetics problems involving Punnett squares. Each problem asks the reader to: identify the genotypes and phenotypes of the parental organisms; and draw a Punnett square to determine the possible genotypes and phenotypes of the offspring. The problems involve crosses between organisms with traits such as wing shape in flies, eye color in humans, and deafness in dogs.

5. Genetics Quiz: Punnett Squares
1.) A homozygous normal winged fly is crossed with a homozygous vestigial winged fly. Normal
wings are dominant to vestigial wings.
a.) Identify each parental genotype.
b.) Identify each parental phenotype.
c.) Do a cross to determine the genotype and phenotype ratios for the offspring.
2.) Two heterozygous parents are crossed.
a.) Identify each parental genotype.
b.) Identify each parental phenotype.
c.) Do a cross to determine the genotype and phenotype ratios for the offspring.

6. Genetics Quiz: Punnett Squares
1.) A heterozygous normal winged fly is crossed with a homozygous vestigial winged fly. Normal wings are
dominant to vestigial wings.
a.) Identify each parental genotype.
b.) Identify each parental phenotype.
c.) Do a cross to determine the genotype and phenotype ratios for the offspring.
2.) Two heterozygous flies are crossed.
a.) Identify each parental genotype.
b.) Identify each parental phenotype.
c.) Do a cross to determine the genotype and phenotype ratios for the offspring.

7. Genetics Quiz: Punnett Squares
1.) In humans, brown eyes are dominant over blue. A brown-eyed man marries a blue-eyed woman and they have
three children, two of whom are brown-eyed and one of whom is blue-eyed.
a.) Using what you know about the offspring, identify each parental genotype.
b.) Identify each parental phenotype.
c.) Do a cross that shows the possibilities of these children.
2.) A homozygous dominant man and a homozygous recessive woman want to know
the color of their childrens' eyes.
a.) Identify each parental genotype.
b.) Identify each parental phenotype.
c.) Do a cross to determine the genotype and phenotype ratios for the offspring.

8. Genetics Punnett Square Quiz
1.) Deafness is a recessive disorder in certain breeds of dogs. A deaf male and a hearing female are crossed, and
their litter contains puppies that are both hearing and deaf.
a.) Identify each parental genotype.
b.) Identify each parental phenotype.
c.) Do a cross to determine the genotype and phenotype ratios for the offspring.
2.) Two hearing dogs are mated. Their litter of puppies contains hearing to deaf dogs in a 3:1 ratio.
a.) Identify each parental genotype.
b.) Identify each parental phenotype.
c.) Do a cross to determine the genotype ratios for these offspring. As part of your answer, circle the genotype that
creates a deaf dog.