Blood typing Flashcards
Human blood is both..
Dominant and codominant gene
The four major blood types are..
A, B, AB and O
What are the three possible alleles that blood has?
I^a, I^b and O (ii)
What do the alleles do in blood?
They code for enzymes, they enzymes attach sugar (antigens) to RBC.
Which blood type has antigen and which don’t?
A, B, AB have antigens while O does not
We can only accept blood from others if we have the same..
Antigen
Why is a person with blood type O called a universal donor?
Because the donated RBC have no antigens and can therefore, be safely given to people of any blood group.
Why is a person with blood type AB a universal receiver?
They have no antibodies in their blood and can receive red blood cells from a donor of any blood type.
Antibodies don’t affect blood donation because..
RBC is extracted from plasma during blood transfusion.
Does blood type AB have antibodies?
No
Does blood type O have antigen?
No
Does blood type O have AB for antibodies?
Yes
Blood typing is dependent on…
Antigen
Which blood type can be either homozygous or heterozygous?
Blood type A and B
What is autoimmune disease?
When antibodies form your own blood group starts to fight your own blood group because the immune system malfunctions, attacking healthy cells, tissues and organs.
