It is said that the birth of a child depends on the blood type. A child's blood type is determined by both parents through heredity. A child's blood type is not necessarily the same as that of his parents. You can refer to the table of blood types of children and parents. There are four ABO blood group systems: type A, type B, type AB and type O. Parents don't inherit blood groups from their children, but control blood groups. Children will have different gene combinations, not necessarily the same blood type as their parents. However, according to the genetic model, the blood relationship between parents and children can be inferred.
We usually refer to ABO blood group. ABO blood group gene is divided into two parts, one from mother and the other from father. Therefore, a child's blood type may not be exactly the same as that of his father or mother. There are four blood types: A, B, AB and O. The so-called blood type is the antigen type on the surface of blood components. If red blood cells only have antigen A, they are just like blood. If there is only B antigen, it is B blood.
It's entirely possible. Although you have blood type, your lover can't have the same blood type as you. If he (she) is type A or AB, her child's blood type can be type A, stop dreaming, I have a lovely son, I should be happy, but not happy. According to the difference of human erythrocyte surface antigens A and B, blood types can usually be divided into B type, AB type and O type (other special cases will not be discussed here).