GONDI VISHNUPRIYA
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Posted 4 year ago

How many blood categories of human being?

2 Answer(s)
V PRABHAKAR RAO
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Mitesh Sharma
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Posted 4 year ago Mitesh Sharma

There are 4 main blood groups (types of blood) – A, B, AB and O. Your blood group is determined by the genes you inherit from your parents. Each group can be either RhD positive or RhD negative, which means in total there are 8 blood groups.