Blood Types and Rh Factor

http://www.givelife2.org/aboutblood/bloodtypes.asp

Blood Types-----

1. What are the four blood types?
2. _____ is the most common blood type.
3. What does it mean if you have blood type B? Blood type O?
4. Blood type ____ is considered the universal donor. What does "universal donor" mean?
5. Blood type ____ is considered the universal recipient. What does "universal recipient" mean?
6. What percentage of African Americans have blood type O+?
7. Which racial group has 0.2% of its population with blood type AB-?
8. True or False-- Blood type is passed genetically from parents to children.
9. If both parents have blood type B, what are the two possible blood types of their children?
10. If one parent has blood type A and the other has blood type B, what are the possible blood types of their children?

Rh Factor----http://www.mayoclinic.com/health/rh-factor/AN00566

11. What does it mean when a person is Rh positive? Rh negative?

12. When is a person's Rh factor a problem in pregnancy? Why?