Download Blood Type Problems

IHS Biology
Blood Type Genetics Problems!
Name: __________________________________
Directions: As always, show all work & circle your answers!
Single-gene problems
1. A husband has type B blood and his wife has type A blood. The couple has two children: a
son with type A blood and a daughter with type B blood. If the couple has a third child, what
blood type(s) might the baby have, and how likely is each one?
2. A baby has type AB blood. The suspected father of the baby has type O blood. Can genetics
prove that the man is or is not the baby’s father? Explain.
3. An Rh negative woman and an Rh positive man have a child – an Rh positive baby.
were the "odds" of this couple having an Rh positive baby?
What
Two-gene problems
4. A student learns that she has type A positive blood.
a. What blood type(s) could she receive in a transfusion? _____________________
b. To persons with which blood type(s) could she donate? ____________________
5. A woman with the genotype IAi Dd is married to a man with the genotype IBIB dd.
a. What are the phenotypes (e.g., the "blood types") of the woman and man in this problem?
b. What are the "odds" of this couple having a child who is type B positive?