1. Blood Types Codominance/Complete Dominance
Ch 10/11
Blood Types Codominance/Complete Dominance

2. Blood Types A person can have the following blood types.
A, B, AB or O
Antigens - Carbohydrates on the surface of the cell determine what blood type you have.

3. Blood Types
Multiple Alleles – A gene that has three or more alleles. (Example: Blood type)
The blood groups result from combinations of the three alleles.
The blood group alleles are symbolized
IA (for A)
IB (for B)
i (for neither A or B).
IA and IB are dominant to i.
IA and IB together are codominant.

4. Blood Types

5. Blood Types - Matching
antibodies = Proteins which attack foreign cells.
Mixing the wrong blood groups will cause the antibodies to attack the foreign blood cells and cause them to clump up.
Agglutination = The clumping of red blood cells when held together by antibodies

6. Blood Types

7. Blood Types
AB is considered a universal recipient.

8. Blood Types
O is considered a universal donor.

9. Blood Types

10. Blood Types - Rh
Red blood cells have another antigen on their surface called the Rh antigen.
Rh+ is dominant and Rh- is recessive.
Rh+ genotypes
Rh+ Rh+
Rh- Rh+
Rh- genotypes
Rh- Rh-

11. Blood Types - Rh
Rh+ has the Rh antigen and cannot develop Rh antibodies
Rh+ can receive both Rh+ and Rh- blood types.

12. Blood Types - Rh
Rh- do not have the Rh antigen and can develop Rh antibodies
Rh- can only receive Rh- blood types.