Blood Type Codominance Practice Problems Worksheet Template (Page 2 of 2) in pdf

Blood Type Codominance Practice Problems Worksheet Template Page 2

5. A father is heterozygous for his type A blood and a mother is heterozygous for her type B blood.

a. What percentage of their offspring would you expect to have…

Type A Blood ______%

Type B Blood ______%

Type AB Blood ______%

Type O Blood ______%

6. Mrs. Weasley has Type A blood but she is not sure if she is homozygous or

heterozygous. Mr. Weasley is completely unsure of his blood type. Their

children have the following blood types: Ron has Type O blood, Fred &

George have type A blood, Ginny has type B blood and Percy has type AB

blood. Show the cross to answer the following questions.

a. What is Mrs. Weasley’s genotype? _________

b. What is Mr. Weasley’s genotype? _________

7. In 1968, a couple accused a hospital of switching their baby with

another. DNA fingerprinting did not exist at this time so the hospital traced the

blood types of the family in order to determine if a mistake was made. The

mother had type A blood, the father had type AB blood, and the baby had type

O blood. Use the punnett square to defend your answer to the following

question.

a. Did the hospital make a mistake and switch the baby? ______

8. On a recent episode of CSI, multiple people came forward claiming to be

the parents of the victim. For the first set of parents, the man has type

AB blood, the woman has type O blood and yet the victim has type B

blood. Use the punnett square in order to determine if these people

could possibly be the parents of the victim.

a. Could these be the parents of the victim? _______

b. In the chart below, circle the other possible options for

Couple

Blood Types

the parents of the victim.

Bob and Gina

Type O and Type O

Ted and Susan

Type AB and Type

Rob and Kelly

Type A and Type A

Tricia and James

Type A and Type B

Blood Type Codominance Practice Problems Worksheet Template Page 2