Does one’s blood type has anything to do with genetics?
The answer is yes. Everyone has an ABO blood type (A,B, AB or O) and a Rh factor
(positive or negative). Just like hair or eye colr, the blood type is inherited from
one of our parents.
Each biological parent gives one of two ABO genes to their child. A and B genes are
dominant, while the O gene is recessive, this means that if an O gene is paired with
a B gene, the blood type will be B.