Blood Types

Blood Types

by Hannah Freeman

​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

Open Ended

Example #2: Blood type B will have antigen _____ and antibody _____

Multiple Choice

Which blood type has no antibodies?

• A

• B

• AB

• O

Open Ended

Two parents think their baby was switched at the hospital. Its 1968, so DNA fingerprinting technology does not exist yet. The mother has blood type “O,” the father has blood type “AB,” and the baby has blood type “B.”

Was the baby switched?

Multiple Choice

Which blood type is the universal giver?

• A

• B

• AB

• O

​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.

Open Ended

Two parents think their baby was switched at the hospital. Its 1968, so DNA fingerprinting technology does not exist yet. The mother has blood type “O,” the father has blood type “AB,” and the baby has blood type “B.”

Was the baby switched?