2. Blood types are based on the presence or absence of specific antigens on red blood cells; four blood types: A, B, AB, O

3. Blood Type …codominance and multiple alleles

4. Multiple alleles …More than two choices.

5. IA IB iIA IB i Type A B AB Universal Recipient O Universal Donor Genotype I A I A or I A i I B I B or I B i I A I B ii homozygous heterozygous

6. I A i x I A I B

7. I A i I A I B I A I A I B I B i I A i

8. Cross a man with blood type AB with a woman with blood type O.

9. How would you set it up?

10. IAIA IBIB i i

11. IAIA IBIB i i I B i I A i IA iIA i

12. Who did the blood banks? Charles Drew Why? Blood transfusions

13. If a son has blood has blood type O, could a man with blood B be his dad? If the mom has A? Punnett Square

14. What % chance does an A (I A i) and a B (I B i) man have of having an O child? 25%

15. Blood Type Practice Problems!