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Blood Types Codominance/Complete Dominance

Learn about ABO blood types, multiple alleles, antigen-antibody reactions, and Rh factor in blood transfusions. Discover why AB is a universal recipient and O a universal donor.

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Blood Types Codominance/Complete Dominance

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  1. 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.

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