Science, asked by gopal34221, 1 year ago

why do people have different different blood groups??

Answers

Answered by annoyinggirl
3

Answer:

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.

Answered by krisha817
1

Answer:

human are more likely came exist to fent off infectious disease . the compatibility of some blood types.

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