Question

Why different blood groups are found in human beings??

Answer 1

Human blood types most likely came to exist to fend off infectious diseases. The incompatibility of some blood types, however, is just an accident of evolution. There are four main blood types. Blood type A is the most ancient, and it existed before the human species evolved from its hominid ancestors.

Answer 2

Answer:

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Explanation:

Answer

The different blood groups are found in human beings because human blood types most likely came to exist to fend off infectious diseases.The incompatibility of some blood types, however,is just an accident of evolution.

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