2. What are the 4 human blood types?
A, B, AB, and O
This is an example of multiple alleles.
What are the alleles for the human blood types?
A, B, O
These 3 alleles can be combined to make 4 blood types.

3. What makes the 4 blood types different?

4. The antigen (protein) on the surface of the Red Blood Cell.
Blood Type
antigen A B AB
A and B O
neither

5. Human blood type is also and example of a codominant trait.
alleles A and B are both dominant,
allele O is recessive.

8. Transfusion Rule – never give a person a new blood protein
Type can be given to: A A or AB B B or AB AB AB O A, B, AB, O

9. What was Dr. Drew’s most important accomplishment
What was Dr.Drew’s most important accomplishment? What was the irony of his death?

10. Inheritance of human blood types:
These problems have the same 4 parts:
P1 statement
Punnett square
genotype
phenotype