The medical principle of blood type

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　　What we generally call "blood type" refers to the "ABO type" blood type, which is classified according to different appearances such as type A, type B, type O, and type AB. This is common hygiene knowledge. Everyone knows that if you encounter a patient who needs blood transfusion, you must first check and confirm their blood type. If you don’t confirm the blood type, you can’t just transfuse any blood. One of the factors that determine this blood type is something called a "blood type substance". For convenience, we can omit the word "type substance" to think about it, but we must not forget what it is. It should not be confused with the "blood" we often say. Blood type substance is a kind of polysaccharide-protein type accessory compound, it is a kind of organic compound with extremely large molecular weight. Because the compound structure of this compound is not the same, it does not appear as a single form, but split into two material types, A-type and B-type.

　　If a person does not have any blood-type substances in his body, then he is O-type. If it contains type A substance, it is type A. If it contains type B substances, then it is type B. If it contains both type A and type B substances, then it is type AB. There is generally a translucent film in human blood that wraps red blood cells. What we call "blood-type substances" "It means passing through the translucent membrane to mix with the red blood cells.

　　As a blood type, the most important point is that it must be inherited. Everyone will admit that compared with personality, a considerable part of a person's temperament is inherited from his parents.

　　The so-called inheritance means that children fairly receive one by one factor from their parents. Therefore, when describing the status of a person’s genetic factor, two parallel genetic factor symbols should be noted, one representing the one received from the father. , A representative received from his mother. Such as OO, which means that the same O factor is received from both parents. The AO type means that one of the parents has accepted the A factor, while the other parent has accepted the O factor. So what kind of state will the genetic factors of the born child become? Please refer to the table below:

 

Parent's blood type Parental genetic factors Genetic factors of children Child's blood type
Ｏ×Ｏ ＯＯ×ＯＯ ＯＯ O
O×A ＯＯ×ＡＯ OO, AO O, A
ＯＯ×ＡＡ AO A
O×B ＯＯ×BＯ OO, BO O, B
OO×BB BO B
O×AB OO×AB AO, BO A, B
A×B AO×BO OO, AO, BO, AB O, A, B, AB
AO×BB BO, AB B, AB
ＡＡ×BＯ AO, AB A, AB
AA×BB AB AB
Ａ×Ａ ＡＯ×ＡＯ OO, AO, AA O, A
ＡＯ×ＡＡ AO, AA A
ＡＡ×ＡＡ A A A
B×B BO×BO OO, BO, BB O, B
BO×BB BO, BB B
BB×BB BB B
A×AB AO×AB AO, AA, BO, AB A, B, AB
AA×AB AA, AB A, AB
B×AB BO×AB AO, BO, BB, AB A, B, AB
BB×AB BB, AB B, AB
AB×AB AB×AB AA, BB, AB A, B, AB