1. Purple flowers are dominate to white flowers in pea plants. A plant with homozygous purple flowers is crossed with a white flower. What are the possible genotypes and phenotypes of the offspring? Also give the probability of each phenotype.

2. A widow's peak is dominant to a straight hair line. A woman who is heterozygous for a widow's peak marries a man with a straight hair line. What are the possible genotypes and phenotypes of the offspring? Also give the probability of each phenotype.

3. Dwarfism is dominate to normal height. Two heterozygous dwarfs marry. What are the possible genotypes and phenotypes of the offspring? Also give the probability of each phenotype.

4. A woman who is heterozygous for dwarfism and heterozygous for a widow's peak marries a man with the same genotype. What are the possible phenotypes of the offspring? Also give the probability of each phenotype.

5. Polydactyly (extra fingers and or toes) is a dominant trait. A woman has heterozygous polydactylism and a straight hair line. She marries a man who does not have polydactylism and is homozygous for a widow's peak. What is the probability of each phenotype?

6. Lesch-Nyhan syndrome is a recessive condition that causes mental retardation and self mutilation. A woman who is a carrier for this condition marries a normal man. What are the possible genotypes and phenotypes of the offspring? Also give the probability of each phenotype.

7. A man with Type O blood marries a woman with Type B blood. What are the possible genotypes and phenotypes of the offspring? Also give the probability of each phenotype.

8. A white tiger is a recessive phenotype. Two normal colored tigers that are carriers for white fur mate. What are the possible genotypes and phenotypes of the offspring? Also give the probability of each phenotype.

9. A man with Type B blood marries a woman with Type A blood. They have a child with Type O blood. What are the parents' genotypes?

10. PKU disease is recessive. A man and woman are both carriers for PKU disease. They are concerned their offspring inheriting PKU disease. What would you tell them is the chance of having a child with PKU disease?