Blood Types

The ABO Blood Group System

• Antigenes are what the immune system uses to know what to "kill"

• For example if you have the antigene A you produce the antibody B

• If you have the antigene AB you do not produce any antibodies

• You can therefor receive any blood type

• If you have the antigene O you produce the antibodies B and A

• There are three alleles:

• I^a

• I^b

• i

• I^a and I^b er dominant

• I^a + I^a = A

• I^a + I^b = AB (codominant)

• i + i = O

• I^a + i = A

• There are some genes that code for the blood types: I^a, I^b and i:

• A codes for A

• B codes for B

• i does not code for any particular

Rhesus

• If Rhesus (Rh) is present you are Rhesus positive: R^+

• Dominant

• If Rhesus (Rh) is not present you are Rhesus negative: R^-

• Recessive

Doners

Which blood type do I have?

Blood types are inherited. The chart below shows the potential blood types you may inherit:

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