Question

explain about blood group and it's types and which is universal blood group and rearest blood group that available rarely.
​

Answer 1

Answer:

four types of blood groups are formed they are a b ab and O

Explanation:

the rarest blood group found is ab negative

and the most common type of blood group is o positive

Answer 2

Answer:

However, in the United States, AB-negative is considered to be the rarest blood type, and O-positive the most common. The Stanford School of Medicine Blood Center ranks blood types in the United States from rarest to most common as follows: AB-negative