​Blood Types=Codominance

​•ABO Blood types

•What are the blood types that you know about?

•A

•B 

•AB

•O

​Codominance in Blood Types

• ​Blood type A, B, and O are all dominant

• ​Vocab to know:

  • ​Antigen: receptor found on the red blood cell surface

  • ​Antibodies: Part of your immune system that help your body defend against foreign material​

• ​Example: Blood type A expresses A antigens present on red blood cells and produce antibodies for B

​Practice

​Pretend that Brad Pitt is homozygous for the type B allele, and Angelina Jolie is type “O.” What are all the possible blood types of their baby.