1. Multiple Alleles- Blood Typing

2. How common is your blood type?
46.1%
38.8%
11.1%
3.9%

3. Genetics of Blood Types
Human blood type is determined by co-dominant alleles
Antigens-proteins-exist on the surface of all of your red blood cells.
Genotypes
Phenotype
AA, AO A
BB, BO B AB OO O

4. Antibodies Found in the plasma Specific to a single kind of antigen
Attack and kill that specific kind of antigen

5. AA or AO = Type A BB or BO = Type B OO = Type O AB = Type AB
What are blood types?
There are 3 alleles for blood type: A, B, O
Since we have 2 genes: 6 possible combinations
Blood Types
AA or AO = Type A BB or BO = Type B OO = Type O AB = Type AB

6. RBC= Red Blood Cell
= antibody
Antibody B- protects the body by attacking foreign B antigen blood

7. Scenario B

8. Scenario AB

9. Scenario O

10. Blood Transfusions O A B AB
Blood transfusions – used to replace blood lost during surgery or a serious injury or if the body can't make blood properly because of an illness.
Who can give you blood?
TYPE O -Universal Donors
can give blood to any blood type
No antigens present on RBC
TYPE AB- Universal Recipients
can receive any blood type
No antibodies present in plasma A B O AB
Universal Donor
Universal Recipient