What blood type of person and what blood type birth son is

Hello. Let me give you an example before answering this question: Someone asked, "Why is it that a couple with different blood types has a child with a different blood type than his parents?" (The father is type O, the mother is type AB, but their child is type B, why is that?) ）”

Let's explain this question like this.

The controlling gene for blood group is ABO (O is also often written "I").

If the father's blood type is AB, then his blood group gene is AB

If the mother is O, then her blood group gene is OO

Therefore, it is not difficult to see that A and B are all dominant genes, as long as there is a or B in the gene, then the corresponding blood type is A, B or AB, and the blood type O must be both genes O, that is, OO, if it is AO, it is still type A, if it is BO, it is still type B.

If the father's blood type is AB, then his blood group gene is AB, and the gene he can provide is A or B

If the mother is O, then her blood group gene is O, and the only gene she can provide is O

You can try to make a combination.

Let's look at the case where the father provides a (from the father) + o (from the mother) then the blood type a

Let's look at the case where the father provides b b (from the father) + o (from the mother) then the blood type b

So the child's blood type can only be A or B, and the corresponding blood group genes are AO and BO.

After looking at the above examples, it is much clearer to look at the following theory:

Generally speaking, the genetic composition of ABO blood group is: ("I" is used below to represent recessive genes).

Type A: AA, AI

Type B: BB, BI

Type O: Type IIAB: AB

The blood type of the child of two people is half of the genes in the blood type of the parents, for example.

Type A and Type A people: First of all, both parents are type A, but it may be AA or AI, with a chance of 1 2 each. But the result of the final combination may be AA, AI, or II, that is, the child may be type A or type O.

The same is true for people with type B and type B: the child should be type B or O.

Type O and Type O people: The child can only be Type O.

AB and AB type: It may be A, B or AB, but it can never be O.

People with types A and B: All blood types are possible for children.

Type A and Type O: The child may be Type A or O.

Type A and AB people: may be type A, B or AB, never type O.

Type B and Type O: The child may be Type B or O.

Type B and AB people: may be type A, B or AB, never type O.

Type AB and O: The child may have type A or B.

So, just figure out the intrinsic genotype of each blood type:

Type A: AA, AI

Type B: BB, BI

Type O: Type IIAB: AB

Then make a combination and you're good to go.

We hope you are satisfied!

Categories: Medical & Health >> Common sense of the human body.

Analysis: There are four types of human blood types, type A, B, O and AB, and there are dominant genes and recessive genes in blood group genes, according to the law of inheritance.

Children born to blood type A and blood type A may have blood type A and O.

Children born to blood types A and B may have blood types A, B, AB, and O.

Children born to blood types A and O may have blood types such as A and O.

Children born to blood types A and AB may have blood types such as A, B, and AB.

Children born to blood types B and B may have blood types such as B and O.

Children born to blood types B and O may have blood types such as B and O.

Children born to blood types B and AB may have blood types such as A, B, and AB.

Children born to type O and type O blood can only have type O.

Children born to blood types O and AB may have blood types A and B.

AB and AB blood types may have blood types such as A, B, AB, and O.

If it's not detailed enough, you can check out the high school biology textbook, which has a very detailed explanation of heredity and variation.

Blood type is a complex issue, often referred to as red blood cell blood type, the most important is the ABO blood group system, that is, the human blood type is divided into four types: type A, type B, type AB and type O. People with type A have a antigen on their red blood cells, type B has a B antigen, type AB has two antigens, A and B, and type O has no antigen. According to the genetic law of blood group, a fixed model in the table can be formed.

Because of mother and child"The blood dan feast type is incompatible"It can cause the mother to produce antibodies, and cause hemolysis of the fetus and newborns, resulting in jaundice, severe fetal edema, and even fetal death in utero. Some develop hemolytic jaundice after birth, known as neonatal hemolysis.

The genetic relationship of blood type between parents and children can provide some clues in the identification of parental authority in forensic medicine, and has certain reference value.

Genetic relationship of blood type between cousins and children.

Children with double new blood types may not have blood types.

a×aa，ob，ab

a×oa，ob，ab

a×ba，b，ab，o- -

a×aba，b，abo

b×bb，oa，ab

b×ob，oa，ab

b×aba，b，abo

ab×oa，bab，o

ab aba, b, laugh repentance abo

o×ooa，b，ab

Not necessarily. Blood type is the outward manifestation of inherited genes. Because the genes that determine blood type are a group of dominant genes, the same blood type may correspond to multiple gene types.

For example, blood type A may correspond to two gene types, AA, and AO; Similarly, blood type B also corresponds to two gene types, namely BB, and blood type and AB blood type only correspond to one gene type, which are OO and AB.

List of different blood types of father and son:

1. The father has blood type A and the mother has blood type A.

If both parents have the same gene type as AO, the son's gene type may be AA and AO, OO, i.e., blood type A and blood type O.

2. The father has blood type A and the mother has blood type B.

If the paternal gene type is AA and AO, and the mother's gene type is BB and BO, the son's gene type may be AB, OO, AO, and BO, i.e., blood type AB, blood type O, blood type A, and blood type B.

The child has blood type O, and the blood type of the parents is: O and O, A and O, A and A, A and B, B and O, B and B.

Blood type is determined by the combination of three genetic factors such as A, B, and O, and most of them can be judged according to the blood type of the parents.

1. O and O: The blood type and O that the child will appear

2. A and O: The blood type, A, and O that the child will have

3. A and A: The blood type, A, and O that the child will have

4. A and B, the blood balance that the child will appear such as type, A, B, Ab, O5, A and AB: the blood type that the child will appear, A, B, Ab6, B and O: the blood type that the child will appear, B, O

7. B and B: The blood type, B, and O that the child will appear

8. B and AB: The blood type, A, and B that the child will have

9. AB and O: The blood type, A, and B that the child will appear

10. AB and AB: The blood type, A, B, AB <> that the child will appear

Type A, Type B, Type O, and Type AB are all possible, because the genes of both sides are uncertain, and none of the four blood types can be ruled out. The genes of the various blood groups of the parents are recombined when the sexes are combined, and the various blood types of the children are recombined and formed.

There is a certain blood relationship between the blood type of the child and the parent, but it is not necessarily the same. Therefore, if the parents have blood type A+B, the child may have four blood types O, A, B, and AB.

To give you a table of common ABO blood group genetic patterns:

Couple children probability.

a＋a a、o 3/4 1/4

a＋b a、b、o、ab 1/4 1/4 1/4 1/4

a＋o a、o 1/2 1/2

a＋ab a、b、ab 1/2 1/4 1/4

b＋b b、o 3/4 1/4

b＋o b、o 1/2 1/2

b＋ab b、a、ab 1/2 1/4 1/4

o＋o o 1/1

o＋ab a、b 1/2 1/2

ab＋ab a、b、ab 1/4 1/4 1/2

1.Blood type is a genetic marker in humans, often called blood group antigens on the surface of blood cells. There are hundreds of blood group antigens on red blood cells, white blood cells, and platelets, and the number of blood groups that can be combined is greater than 10 17, which is more than the total population on the earth.

Theoretically, no two people have the same blood type, except for identical twins. When we talk about blood type, we usually refer to the red blood cell blood group, which refers to the ABO blood group system, and there are four blood types: A, B, O and AB. The classification principle is to see whether there are A and B antigens on red blood cells, that is, only A antigen is called type A; Only the B antigen is called type B; Those without A and B are called O-type; Those with A and B are called AB type.

2.Blood type is heritable, that is, each person has two genes: type A is AA or AO; Type B is BB or BO; Type O is OO; Type AB is AB.

3.In addition, the term "hemolytic infant" can also be understood: "hemolytic infant" refers to neonatal hemolysis.

Neonatal hemolytic disease refers to neonatal immune hemolysis caused by incompatibility between the blood group of the mother and the fetus.

Hemolysis is most common in blood group A, B, and O incompatibility, with the most common being type O in the mother and type A or B in the fetus (or infant). It is also seen in the mother is type A, the fetus (or infant) is type B or AB, the mother is type B, and the fetus (or infant is type B or AB), but it is rare. If the fetus (or infant) is type O, the disease can be excluded.

But don't worry too much, mother-child blood group incompatibility does not necessarily lead to the occurrence of hemolysis, the incidence of ABO blood group incompatibility is about 20, but the real occurrence of neonatal hemolysis is only less than 5.

In general, the disease is likely to occur in the first child, and the more births there are, the higher the incidence rate, and each time it becomes more severe. However, if you are pregnant for the first time and the pregnancy process goes smoothly, hemolysis will not occur at all.

Blood type is inherited from one gene from one parent and one from one mother. So blood type is a pair of genes. The blood type A is AA or AI, the blood type B is BB or BI, the AB blood type is AB, and the O blood type is II, so the following is the blood type of the child born to the parents

Type (AA or AI) With:

Type A (AA or AI): There may be a combination of AA or AI or II, so it is A, or Type O.

Type B (BB or BI): There may be a combination of AB, BI, AI, II, so it is AB, B, A, O

AB (AB) type: It is possible to have a combination of AA, AB, AI, BI, so it is A, AB, B

O(ii) type: There is a possibility of a combination of AI, II, so it is A, O

Type (BB or BI) With:

Type A (AA or AI): There is a possibility of a combination of AB, AI, BI, II, so it is AB, B, A, O

Type B (BB or BI): There is a possibility of a combination of BB and BI, so it is B

AB (ab) type: It is possible to have a combination of AB, BB, AI, and BI, so it is AB, A, and B

O(II) type: There is a possibility of a combination of BI, II, so it is B, O

Type (ii) Matching:

Type A (AA or AI): There is a possibility of a combination of AI, II, so it is A, O

Type B (BB or BI): There may be a combination of BI, II, so it is B, O

AB (AB) type: There is a possibility of a combination of AI and BI, so it is A and B

O(II) type: There is a possibility of a combination of II, so it is O

Type (ab) Matching:

Type A (AA or AI): There may be a combination of AA, AB, AI, BI, so it's A, AB, B

Type B (BB or BI): There may be a combination of AB, BB, AI, and BI, so it is AB, A, and B

AB (AB) type: There may be a combination of AA, AB, and BB, so it is A, B, AB

O(ii) type: There may be a combination of AI and BI, so it is A, B