Question

how many types of blood groups are there and what are they?​

Answer 1

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There are four main blood groups(types of blood) – A, B, AB and O. Yourblood group is determined by thegenes you inherit from your parents. Each group can be either RhD positive or RhD negative, which means in totalthere are eight main blood groups.

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Answer 2

Answer:

there are four types of blood groups

A, B, O, AB

A blood type (also called a blood group) is a classification of blood, based on the presence and absence of antibodies and inherited antigenic substances on the surface of red blood cells (RBCs). ... Blood types are inherited and represent contributions from both parents......