Ch 1011 Blood Types CodominanceComplete Dominance Blood Types

Ch 10/11 Blood Types Codominance/Complete Dominance

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.

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.

Blood Types

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

Blood Types

Blood Types • AB is considered a universal recipient.

Blood Types • O is considered a universal donor.

Blood Types

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- genotypes – Rh-