There are such cases when, after the birth of a child, young parents, having recognized his blood type, experience conflicting feelings, thinking that their child has been replaced - because neither the father nor the mother has the same blood type.
In fact, there is no reason to worry, you just need to remember which blood types a child can inherit from his parents.
Often, parents are interested in the question of how to find out the blood type of the child (possible combinations). It turns out that today you can do this by knowing the parent blood types.
Let's try to figure it out. First, let's look at the history of the discovery of blood groups. This event occurred at the beginning of the twentieth century. The Austrian Karl Landsteiner drew attention to the fact that when mixing the blood of several people, red blood cells can behave differently: in one case they stick together, and in the other there is no such reaction. This prompted the scientist to the idea that there are compatible and incompatible blood groups. This discovery was of great importance, because thanks to the knowledge about the compatibility of certain groups, its safe transfusion became possible.
Two decades later, scientists learned about the inheritance of groups from parents, which occurs in accordance with the laws of genetics, discovered by G. Mendel. Like any sign of heredity, a blood group is determined in accordance with the fact that one gene from a pair is transmitted from parents. Thus, the parents do not transmit the finished group, but only one gene, on the basis of which the baby’s blood group is formed, which does not always coincide with the parent.
There are several different classifications of blood groups, but the most common is the AB0 system, which includes 4 blood groups.
How to find out the blood type of a child based on the blood groups of the parents? It's simple, you need to turn to the law of inheritance of genetic traits.
1 group, it is also zero, is designated 00. In this group there are two identical genes received from each parent. The first group in a child does not mean that parents have the same group, but gene 0 must be present in it.
Group 2 is denoted by the letter A. This type of inheritance is possible not only if the parents also have group 2, but also if the parent gene is inherited from the zero gene, which has a characteristic feature: it is unable to express itself in the presence of A and B proteins.
Group 3 (B) is formed by inheritance of one B gene from parents or in the case of a combination of B0 genes.
When the child inherits one gene A from the parents, and the other B, which are equal to each other, the 4th group (AB) is formed.
All of the above will be presented in table form.
maternal blood type
| father's blood type |
| 1 (00) | 2 (0A, AA) | 3 (0V, BB) | 4 (AB) |
| 1 (00) | 1 (00) | 1 (00), 2 (0A) | 1 (00), 3 (0V) | 2 (0A), 3 (0V) |
| 2 (0A, AA) | 1 (00), 2 (0A) | 1 (00), 2 (0A, AA) | 1 (00), 2 (0A), 3 (0V), 4 (V) | 2 (0A, AA), 3 (0B), 4 (BB) |
| 3 (0V, BB) | 1 (00), 3 (0V) | 1 (00), 2 (0A), 3 (0V), 4 (AB) | 1 (00), 2 (0V, BB) | 2 (0), 3 (0, ), 4 () |
| 4 (AB) | 2 (0A), 3 (0V) | 2 (0A, AA), 3 (0V), 4 (AB) | 2 (0), 3 (0, ), 4 () | 2 (AA), 3 (BB), 4 (AB) |
We hope that our table “How to find out the child’s blood group, knowing the blood groups of both parents” will help to understand this issue. Perhaps the doubts of some parents will also disappear after studying it.
It turns out that the question of how to find out the blood group has a fairly simple answer. Based on the knowledge of the blood groups of the parents, you can calculate your own (though more than one option is possible here), or, conversely, calculate the maternal and paternal blood types based on the knowledge of the children's blood type. And in order to get accurate information, you need to take a blood test for a blood group in donor points or clinics.