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Because the mother's blood antibodies did not affect the child. However, if the mother is not treated with Rhogam after delivery the mother has a increased chance of creating antibodies that WILL affect her next baby in utero due to the rh incompatibility creating antibodies that could attack the fetus in utero. Make sure you receive RHOGAM! Hope this helps!

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13y ago
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7mo ago

An Rh positive baby born to an Rh negative mother is unaffected if the mother isn't sensitized to the Rh antigen. Sensitization usually occurs in subsequent pregnancies if the mother is exposed to the Rh antigen during childbirth or through prenatal screening. The first pregnancy with an Rh positive baby is usually not problematic because the mother's immune system doesn't have a chance to develop antibodies against the Rh antigen.

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Q: Why rh positive baby born to an rh negative mother is unaffected?
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If the father is 0 positive and the mother is o negative can the baby be a pos?

No, the baby cannot be O positive if the father is O positive and the mother is O negative. A child receives one gene from each parent, so the child would inherit an O gene from the father and an O gene from the mother, resulting in the child being O negative.


Rh positive mother a positive baby?

In this case, there is no risk of Rh incompatibility. Since both the mother and baby are Rh positive, there is no potential for the mother's immune system to produce antibodies against the baby's blood. No further steps are necessary to prevent Rh incompatibility in future pregnancies.


What are the possible blood types the baby could have if the mother is type O-positive and the father has the rh-negative blood type?

The baby's blood type would depend on the specific genotype of both parents. With a mother who is O-positive and a father who is Rh-negative, the baby could potentially have blood types A-negative, B-negative, AB-negative, or O-negative.


Can two parents with b positive make o positive?

Yes. The child will be either A positive or B positive or even AB positive. If the grandparents have a negative (A negative, B negative), there is a slight chance that the child will have a negative. A type O is out of the question. The fact that there are two positive parents means that there is no risk to the mother of Rh negative disorders.


IF a mother is HR negative and father is HR positive why is second pregnancy a problem?

If the mother is Rh-negative and the father is Rh-positive, the second pregnancy might be at risk if the baby is Rh-positive. This is because during the first pregnancy, the mother's body might develop antibodies against the Rh factor, which can affect the baby's blood in later pregnancies, leading to complications such as hemolytic disease of the newborn.

Related questions

CAN A mother be a positive dad o negative and have a a positive baby?

Negative is recessive...you can have a negative also.


Can o negative mother and A positive baby have B positive father?

no


Can an o positive mother and an o negative father have an a positive baby?

can an o positive and an o negative make an a positive baby


Can B positive mother and a B positive mother have a O negative baby?

yes its possible


Can a mother with A positive blood and father with O positive blood have a baby with A negative blood?

Yes, it is possible for a mother with A positive blood and a father with O positive blood to have a baby with A negative blood. The baby would inherit one A allele from the mother and one O allele from the father, resulting in A negative blood type.


Can a o positive father and a o negative mother have an a positive baby?

sometimes


If father is a positive and mother is O negative can the baby be O positive?

yes


Can a baby have A positive blood if the mother is O positive and the father is O negative?

No


Can a O negative father and A positive mother produce a AB positive baby?

the baby may be A or O.


Can an O negative father and a positive mother have a baby?

yes


Can a mother have a positive and father have b positive can have baby with o positive blood group?

Yes, a mother with negative and a father with O positive can have a baby with B positive. If they do, the mother must have blood type B or AB.


What blood type will a baby have with a b negative mother and a a positive father?

B negative