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Do all humans have the same blood types?
Not everyone on Earth has the same blood type. Type A blood contains Type A antigens and type B blood contains Type B antigens. There are 35 blood groups in the world, but the two most common groups are ABO group and Rh group. These groups contain the eight blood types that dominate over 90\% of the world’s population.
Why do human have different blood types?
Blood types are determined by the presence or absence of certain antigens – substances that can trigger an immune response if they are foreign to the body. Since some antigens can trigger a patient’s immune system to attack the transfused blood, safe blood transfusions depend on careful blood typing and cross-matching.
Why do we need to match the blood group?
The accurate grouping of blood is very important when it comes to having a blood transfusion. If blood is given to a patient that has a blood type that is incompatible with the blood type of the blood that the patient receives, it can cause intravenous clumping in the patient’s blood which can be fatal.
Why do scientists believe that people have different blood types?
The reason why scientists believe that people have different blood type is evolution. Survival of a race is directly related to its ability to protect itself from diseases. Since the type of blood that a person has is completely based on their genetics, people in certain regions of the world have more of a particular blood type than the rest.
What are blood groups and why are they important?
Basically the blood groups are based on little proteins that sit on the outside of red blood cells. The reason it’s important for us to be able to tell what blood groups an animal or a person is in is because the blood from one person may not be compatible with another person if their blood group is not the same.
What is the difference between blood group A and B?
This protein, or antigen, has two types, namely A and B. A person whose blood group is A has the antigen A, while a person whose blood group is B has the antigen B on the surface of their red blood cells. However, a person who has neither A nor B antigen has the blood group O, while a person who has both A and B has the blood group AB.
Why do cats have different blood groups than humans?
In cats we also have A and B but they’re not the same as A and B in human blood systems. We don’t know exactly why people have different blood groups or why animals have different blood groups but it is very important because of the risk of interactions with different blood groups in people and other animals.