1. Eloa has blood type A. Her dad has blood type O. Give all of the possible genotypes for her mother's blood.

2. Malike was doing a blood test lab. His mother has blood type A. His father has blood type B. He has blood type O. Explain how this is possible.

3. Andrea is a lawyer researching a lawsuit. The Hernandez family claims the Fernandez family has their baby. The baby's blood type is B. The Hernandez file says mom has type A and dad has type O. The Fernandez file says Mom is type AB and dad is type A. Is it possible that the baby is from the Hernandez parents? Why or why not?

4. Deshaun is a geneticist researching PGK deficiency. This is a recessive trait found on only the X chromosome. Mrs. Ramirez is a carrier for PGK deficiency and Mr. Ramirez does not have PGK deficiency. What is the probability that their daughters will be born carrying the gene?

5. What is the probability that their sons will have the trait?

6. Nehemie has a pregnant patient who is a carrier for hemophilia A, a trait found on the X chromosome. The patient's husband does not have hemophilia A. What is the probability that their son will have hemophilia?

7. What is the probability that their daughter will have hemophilia?

8. Lemuel's grandfather on his mother's side is red-green colorblind. Neither of his parents are colorblind. What is the probability that he is colorblind?

9. Stefan's mother is blood type A, and he knows her dad was type O. His father is type AB. What is the probability that he has blood type AB?

10. Lysine Demethylase is a gene found on the Y chromosome. Why is it impossible for a female to carry this gene?

If Eloa has blood type O then it follows that her mother must have blood type A or AB.
This is possible because both of the parents also have a recessive O trait.
It is not possible that the Hernandez parents own the baby because non of them has the blood type B.
The probability that their daughters will have the deficiency is 50%.
The probability that their son will have the deficiency is also 25%.
The probability that the son will have hemophilia is only 25%.
The probability that a daughter will have hemophilia is 50%.
The probability that Lemuel will be color blind is 0%.
The probability that he has blood type AB is 25%.
The Y chromosome is not found in females hence it is impossible for a female to carry the gene.

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