Question

4) Atia has type A blood and her husband Min has type B blood. Their first child, hanna, has type O blood. Their second child, ken, has type AB blood.

a. What is Hanna’s genotype?

b. What is ken’s genotype?

c. What is the only possible genotype for Atia?

d. What is the only possible genotype for Min?

5) jane has type AB blood. Her husband Pat has type AB blood. Their first child has type O blood.Pat is convinced that the child is not his. Use genetics to see if Pat concern is valid.

a. Genotype of Pat:

b. Genotype of jane:

c. Punnett Square:

		Father:
Mother:

d. Can Pat be the father of the child? Why or why not?

6) Mike has type B blood and his wife lynn has type O blood. They are very shocked to hear that

their baby has type A blood, and think that a switch might have been made at the hospital.

a. What is the genotype of the baby?

b. What are the possible genotypes for Mike?

c. What are the possible genotypes for lynn?

d. Can this baby be theirs? Why or why not?

Answer 1

4.

Hanna = O = IoIo

Ken = AB = IaIb

Atia = A = IaIo (not IaIa, because one of the children is having IoIo genotype and the other is IaIb)

Min = B = IbIo (not IbIb, because one of the children is having IoIo genotype and the other is IaIb)

5.

Jane = AB = IaIb

Pat = AB = IaIb

Gametes	Ia	Ib
Ia	IaIa A	IaIb AB
Ib	IaIb AB	IbIb B

So, the child of this couple cannot have O blood type.

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