1. Multiple Alleles and Blood Types
BIOLOGY 12
Multiple Alleles and Blood Types

2. Blood Type
the alleles of blood type control the production of antigens on the surface of the red blood cells
antigen – a substance that prompts the generation of antibodies and can cause an immune response

3. Blood Type four types: A B AB O
the Rh factor refers to whether the blood has the immunogenic D antigen
this is independent of the ABO system

5. Blood Type
the antibodies recognize foreign antigens and work to destroy them
A and B are co-dominant and O is recessive to both
Canadian Blood Services
Blood Types Tutorial

6. Blood Type genotypes: Allele IA produces antigen A
Allele IB produces antigen B
Allele i produces no antigen
the I stands for isohemagglutinin (compound that allows for clumping)

8. Blood Type so which blood type is the universal donor? type O
which is the universal receiver?
type AB

9. Practice
show a cross between a mother who is heterozygous type B and a father who is heterozygous type A
what is the probability that the child will be type AB?