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Rh-negative is simply a lack of D antigen on the surface of red blood cells.
Most people have D antigen, so they are all Rh-positive blood.
In general, if the parent's blood group is not Rh-negative, the child should not have it, but the possibility of mutating Rh-negative cannot be ruled out.
However, it should be noted that if the child is Rh-negative in women, it can usually only be conceived once, and it is not suitable for the second child, which can easily cause danger to the mother and child, because the Rh-negative blood produces an enzyme in the body after giving birth to the first child, and if the second child is pregnant, if the fetal blood type is not in harmony with the mother, it will cause hemolysis.
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Rh+, known as "Rh positive" and "Rh dominant", indicates that human red blood cells have "Rh factor";
Rh-, known as "Rh negative" and "Rh recessive", indicates that human red blood cells do not have an "Rh factor". When both the mother and father have the Rh(-) gene and pass it on to their offspring at the same time, the child is more likely to have Rh(+) when one of the Rh(-) parents is Rh(+), and vice versa. If it is negative, note the second child.
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RH is a blood grouping system.
According to the presence or absence of Rh(D) antigen, there are two types: Rh negative and Rh positive.
If both spouses are Rh-positive, the child cannot be Rh-negative.
If both spouses are Rh-negative, the child is unlikely to be Rh-positive.
If there is one yin and one yang, then the child is also possible.
None of the rhs you are talking about
I guess I haven't checked my rh blood type yet.
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Both parents have normal blood type, why do children have rh-negative blood type?
The rh(-) gene is a recessive gene. When both parents of rh(+) carry the rh(-) gene, and at the same time pass on rh( ) to their offspring, the child behaves as rh(-) When one of the parents is rh(-), the chance of the child being rh(-) increases, and vice versa. Rh blood type is determined by alleles, if both parents are rh heterozygous, the blood type will be Rh-positive, but there is a 1 4 probability of giving birth to an Rh-negative child.
Suggestion: Therefore, according to the above analysis, Rh-positive parents can give birth to Rh-negative children.
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According to the genetic law of the RH blood group system: human genes are paired, and when they are passed on to their children, each parent inherits one to their children, making up a pair. For Rh blood group, positive is the dominant gene, negative is the recessive gene, which means that when the Rh gene is positive and the other is negative, it is Rh positive.
Therefore, both parents have Rh+ blood type, and the child may have Rh+ blood type, Rh- blood type. The parents are of Rh+ and Rh- blood types, and the children may have Rh+ and Rh- blood types.
Both parents have Rh- blood type, and the child may have Rh- blood type, and the child cannot have Rh+ blood type. So, unless both parents are Rh-negative, it's possible that the situation you're talking about is possible.
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Parents and babies with blood type O and blood type A can be type 0 and blood type A, for Rh blood type, the average person is Rh positive blood type, and there are very few Rh negative blood types, and parents and babies with blood type O and blood type A can be type 0 and A blood, but Rh blood type, Rh antibody is a dominant antibody, and if both parents are negative, the child should also be negative. If one of the parents is positive or both are positive, the baby may also be negative, but the probability of being negative is lower.
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This is possible, although the probability is very small, because the rh (-) gene is a recessive gene, maybe your parents have carried it, but these recessive genes are manifested in you, in 2005 there was a case in Beijing, a boy was stabbed by a gangster, was tested for rh negative blood type, but his family, including his parents, tested normal blood type. I think you should join the House of Love, which is a mutual support group for people with negative blood, so that you can also help those in need and get help as soon as possible when you encounter something. Actually, I envy you, don't worry too much.
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Human erythrocyte blood groups are composed of more than 20 blood group systems, and ABO and RH blood groups are the two blood group systems most closely related to human blood transfusion. When a person has a D blood group substance (antigen) present on their red blood cells, it is called Rh positive, which is denoted by Rh (+); Rh negative is considered Rh negative when D antigen is absent and is denoted by Rh(-).
The distribution of rh(-) varies greatly by ethnicity, with a higher proportion of about 15 percent among Caucasians. Among the Chinese population: the distribution of rh(-) of ethnic minorities such as Uyghurs in Xinjiang is 5%; The Mongols are close to one percent; The proportion of Han people is very small, only 3 per 1,000, which is a rare blood type, and if the ABO and RH blood group systems are considered at the same time, the chance of finding people with the same type of AB type RH (-) in the Han population is less than 3 in 10,000, which is very rare.
The rh(-) gene is a recessive gene. When your mother carries the rh(-) gene and passes it on to her offspring, the chance of having a child with rh(-) parents is increased and vice versa decreases.
Whether it is Rh(-) or Rh(+), the difference is only the difference in blood type, and they are all healthy people. However, the clinical significance of Rh(-) patients cannot be ignored when encountering special ones, such as the pregnancy of two consecutive mothers and babies with incompatible Rh blood group, which is likely to lead to serious injury to the fetus; In addition, patients with a history of immunization such as blood transfusion and ** may have a strong hemolytic transfusion reaction when rh(+) blood is transfused again.
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My wife and I are both O blood, but my son and daughter are Rh blood.
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Then ask them, and you'll understand.
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Maybe you don't know, maybe your parents do, at least one of them is.
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May I ask if the mother has blood type O and the father has blood type Rh, so what blood type should the child have?
The child's blood type needs to be determined according to the blood type of the parents, mainly to see the ABO blood group system of the parents' blood type, the RH blood group system belongs to the subtype of the ABO blood group system, the father's ABO blood group system is not known at present, and it is necessary to have a proper understanding in order to analyze the child's blood type, and the child's blood type needs to be inferred according to the mother's blood type and the father's blood type, the father's RH negative blood group system, and the child's situation may be negative or positive
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According to the laws of heredity of the Rh blood group system:
Human genes are in pairs, and when they are passed on to their children, each parent inherits one to their children, making up a pair. For Rh blood group, positive is the dominant gene, negative is the recessive gene, which means that when the Rh gene is positive and the other is negative, it is Rh positive.
Therefore: both parents are Rh+
Blood type, the blood type that the child may have is Rh+ blood type.
Rh-blood type. Parents are rh+ and rh-
Blood type, the child may have a blood type of Rh+
Blood type, rh-
Blood type. Both parents are rh-
Blood type, the child may have a blood type of Rh+
Blood type, children cannot have rh+ blood type.
So, unless both parents are Rh-negative, it's possible that the situation you're talking about is possible.
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Rh blood group system.
Another major characteristic in the blood is rhesus factor, rhesus factor
Factor) is also read as Rh antigen, Rh factor, named for being the same antigen on rhesus macaque red blood cells, and was first discovered in 1940. Each person's red blood cells may have only or no RH factor, which is usually combined with ABO and written after ABO blood group. Among them, type O+ is the most common.
Rh+, known as "Rh positive" or "Rh dominant", indicates that human red blood cells "have the Rh factor";
Rh-, known as "Rh-negative" or "Rh-recessive", means that human red blood cells are "free of the Rh factor".
Inheritance of the Rh blood group system.
RH is controlled by genes with two alleles on the first chromosome. Rh+ is dominant, and Rh- is recessive.
Parents rh children may.
Children can't.
and ++, and -+,
and --+
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