Working with Multiple Alleles

 

Human Blood Types

 

http://ghs.gresham.k12.or.us/science/ps/sci/soph/genetics/notes/bloodtype.htm

 

Blood Type Antigen(s) Genotypes Can Give to: Can Receive From  
A A AA, AO A, or AB A and O  
   
B B BB, BO B, or AB B and O  
AB A and B AB AB A, B, AB, and O  (Universal Receiver)  
O none OO A, B, AB, and O (Universal Donor) O