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Why would an Rh negative mother and an Rh positive father have difficulties with the birth of their second child?
When the father is Rh positive, it is possible that the child will also be Rh positive. Or, if the father is homozygous ++ or DD, then all of his children will be Rh positive.
When an Rh negative person is exposed to Rh positive blood, in this case during birth, they will develop antibodies against the Rh positive blood. This means that if they come in contact with Rh positive blood again, they have antibodies which will attack the Rh positive blood.
This is what happens when the mother is Rh negative and the foetus is Rh positive. There usually isn't a problem with the first pregnancy, because the mother might not have been exposed to Rh positive blood before. However, if the second foetus is also Rh positive, the antibodies in the mother's blood will attack the foetus. This ranges in severity, but can cause the death of the foetus.
In most cases this is preventable - the mother can receive an injection of anti-RhD immunoglobulin during pregnancy or soon after delivery.
What else can I help you with?
Can an A positive father and a B positive mother have a B negative child?
If the mother is A negative, and the father is B positive, they could have children who are A negative, A positive, B negative, B positive, AB negative, AB positive, O negative, or O positive.
Can an A positive father and A negative mother produce both A positive and A negative children?
Yes.
Caan ab positive father an a negative daughter?
# yes, if father is + - for RH and mother - - (negative) or + - (positive); the father can generate sons A, B, or AB depending by mother's group.
Can A positive father and A negative mother produce a O positive child?
Yes. The father's phenotype is AO+*; the mother's is OO--.
O positive father and A negative mother what will child be?
o positive
Can a o positive mother and a positive father make a a negative child?
no
Can o negative mother and A positive baby have B positive father?
no
Can a A positive mother and an O negative father have an A positive child?
yes
If mother is positive and father is negative is it possible the child would be negative?
If mother is heterozygote yes.
If the mother is b negative and the father is a positive how is the child o negative?
The mother must be heterozygous b and the father must be both heterozygous b and heterozygous positive.
If the DNA of the mother is A and the child is A pos what is the DNA of the father?
Given that the mother's DNA is A and the child is A positive, the father's DNA must also contain the A antigen. The father could be A positive, A negative, AB positive, or AB negative.
If Mother is O positive and father is B positive can child be B negative?
Yes, if the father is heterogeneous positive.
