1. Long hair is dominant for Abyssinian guinea pigs. If you mate a male long- haired Abyssinian guinea pig with a heterozygous genotype with a female- short haired Abyssinian guinea pig, what is the probability of an offspring having short hair?

2. At a murder scene, the victim has been determined to have Type A blood. Another blood source at the crime scene has been determined to be Type O blood. There is a potential person of interest in the crime however, his whereabouts are unknown. The person of interest’s father has been recently determined to have Type AB blood and his mother’s blood type is Type B. Should the police pursue the person of interest as a potential suspect? Use a Punnett square analysis to justify your answer.

3. Green is the dominant trait for pea seed color in pea plants. The recessive condition results in yellow pea seed color in pea plants. You have obtained a package of green pea seeds and would like to know if the genotype is homozygous or heterozygous. If you could do one breeding experiment with your package of pea seeds what would it be to help determine if the genotype of the pea seeds in the package is homozygous or heterozygous? Use a Punnett square analysis to justify your answer.

4. Give me an example where any potential offspring lack the phenotype of either parent. Use Punnett square(s) to illustrate your example.

5. White eyes is a sex-linked trait in Drosophila (fruit flies). Red eyes is the normal phenotype for Drosophila. If a female carrier for white eye is mated with a normal male, what is the probability of having a male offspring with white eyes? Use Punnett square analysis to justify your answer. (Be careful on how you answer this question.)

6. Polydactyly ( presence of an extra digit) is a recessive trait. One type of albinism is a recessive trait. A man that is heterozygous for both traits and a woman that is also heterozygous for both traits plan on having a child. What is the probability of this couple having a child that is shows both polydactyly and albinism. Use a Punnett square to justify your answer.

7. Your grandmother has type B blood. Your grandfather is not sure of his blood type but, he thinks it may be Type A. You have Type O blood. Is this a possibility? Use Punnett squares to justify your answer.

8. T is the dominant trait for tall pea plants (t is recessive for short) and S is the dominant trait for smooth pea seeds (s is recessive for wrinkled). Describe a pairing between two plants that would result in 100% of the offspring having the same phenotype. Use Punnett square(s) to justify your answer.

9. J is a dominant allele for jumping in mice. What is the probability of a non-jumping offspring in the mating of a heterozygous male mouse with a non-jumping female mouse? Justify your answer using a Punnett square.