1. Journal
Why is it important to know your blood type?

2. Human Blood Groups

3. Human Blood Groups
Described by dominant & recessive alleles (Rh)& multiple alleles ( ABO )

4. ABO
Determined by a multiple allele system

5. Antigen
molecules which can be recognized by the body’s immune system on the surface of the red blood cell

6. Antibody
A molecule in the human body which fights foreign objects that do not agree or mix with the body

7. Some blood types are seen as foreign bodies in some humans
The antibodies will actually destroy the red blood cells like they are diseases.

8. If a person with type A blood (which has B antibodies) receives blood from a person with type B blood (which has A antibodies) the antibodies will attack the blood, and the person blood may begin to clump or agglutinate.

9. Blood type A & B are codominant
Blood Type O is recessive

11. Blood Types & Genotypes
Type A Blood
IAIA or IAi
Type B Blood
IBIB or IBi
Type AB Blood
IAIB
Type O Blood ii

12. Blood Group
Antigen
Antibody
Safe Transfusion From A B
A, O
B, O AB
A & B
None
A, B, AB, O O

13. Rh Factor
Protein substance present in the red blood cells of most people, capable of producing intense antigenic reactions

14. Under ordinary circumstances the presence or lack of the Rh factor has no bearing on life or death

15. It is only when the 2 blood types are mixed in an Rh-negative individual that the difficulty arises; the Rh factor acts as an antigen in the Rh-negative person, causing the production of antibodies