Science, asked by beastiegamer7, 7 months ago

why we have different blood groups?


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Answers

Answered by Anonymous
4

Answer:

different blood types evolved as a result of genetic mutations, but what caused certain blood types to be more successful is likely exposure to infectious diseases or other environmental pressures

Answered by Anonymous
3

It's part of our DNA. Sometimes there's a change, or mutation, in DNA. “These different blood types evolved as a result of genetic mutations, but what caused certain blood types to be more successful is likely exposure to infectious diseases or other environmental pressures,” Fyfe-Johnson said

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.

What's the rarest blood type? AB negative is the rarest of the eight main blood types - just 1% of our donors have it.

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.

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