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There is no single answer to this question.
First, some definitions. PHENOTYPE is how the trait is physically displayed in the person, so the parents in this case have the phenotypes O and A. GENOTYPE is the pair of genes that a person carries that determines their phenotype. A RECESSIVE gene is one "trumped" by a DOMINANT gene in the genotype; for blood typing, O is the recessive gene and A and B are dominant. For a person to show the recessive phenotype, they must carry BOTH recessive genes; so, a person with type O must carry two O genes, genotype "OO".
OK, now for our situation. The O parent has genotype OO, as explained above, and so can ONLY pass on the O gene. The type A parent, however, can have genotype AA or AO. Because the A gene is dominant, with the AO genotype the parent is still type A but can pass on EITHER the A gene or the O gene. The child can therefore end up with phenotype AO and be type A or OO and be type O. If exactly one-half of people with type A blood have genotype AA and one-half have AO, the probability of this child being type A is 75%.
For the Rh factor (positive and negative), positive is the dominant trait and negative is recessive. The A- parent must be genotype -/- and can only pass on the - gene. The O+ parent can be +/+ or +/- and can pass on either gene, same situation as above. Again, if people with Rh type positive are split exactly 50/50 in genotypes, this child has a 75% chance of being positive.
What else can I help you with?
What type of blood do I have if my parents are A negative and B positive?
If your parents are A negative and B positive, you could have blood type A or B, as you inherit one blood type allele from each parent. The Rh factor (positive or negative) would depend on whether you inherit the Rh allele from your B positive parent.
Can a o positive and a b negative have a a negative child?
No, the child's blood group would be the same as one of it's parents.
Can parents with both negative blood parent a positive child?
absolutely. as long as one of the parents is positive, the child can be positive. and if one parent is A the other B, the child can be A, B, AB or O depending on the parents' other alleles. so the child can definitely be A or B positive, but also A negative, B negative, AB negative, AB positive, O positive or O negative.
Can you have o negative blood and your biological parent have a positive blood?
No, it is not possible for a biological parent with a positive blood type to have a child with O negative blood. A child inherits their blood type from their parents, and O negative blood type is only possible if both parents pass on an O allele.
What type of blood would you have if both your parents have RH blood type?
Rh is not a blood type by itself but is just one part of what makes up a blood type. There are two parts to blood typing: the ABO aspect and the Rh factor. One has blood type A, B, AB, or O, AND then is either Rh positive, or Rh negative. Hence why you hear blood types like A positive, O negative, etc. The positive/ negative is referring to the Rh factor. Rh positive is dominant, so one only needs one Rh positive parent so be Rh positive. Rh negative is recessive. If both parents are Rh negative, the child they have must be Rh negative as well. To know what blood type you could be, you need to know your parents' entire blood type.
Can parents with b negative blood have a child with o positive blood?
If both parents are B- they can only have children who are B- and O-. One would have to be positive in order to have a child with positive blood.
What type of blood do I have if my parents are A negative and B positive?
If your parents are A negative and B positive, you could have blood type A or B, as you inherit one blood type allele from each parent. The Rh factor (positive or negative) would depend on whether you inherit the Rh allele from your B positive parent.
Can a o positive and a b negative have a a negative child?
No, the child's blood group would be the same as one of it's parents.
Can two parents with O positive blood have a child with AB negative blood?
No. O is recessive. The parents would have to have A and B phenotypes in order for their child to have AB- blood.
Is it rare for an A positive parent and an O positive parent to have an A negative child?
It's rare, but can easily be explained by genetics. The A positive parent could be AA or AO for blood group, and the O positive parent would have to be OO for blood group. Both parents would have to be heterozygous for rh factor, Rh+ Rh- . So the A negative child would have to have inherited an A and O allele from the parents, and an Rh- allele from both parents. This gives the phenotype of A negative.
Can an o negative child have both parents which are 0 positive?
No, an O negative child cannot have both parents with O positive blood types. While both parents can pass on an O allele, they would each contribute a Rh positive factor, resulting in a child with a positive Rh factor. For a child to be O negative, they must inherit the Rh negative factor from both parents.
If the mother has B positive blood and the father has O negative what would the child's blood type be?
B positive or negative or, O positive or negative.
Can parents with both negative blood parent a positive child?
absolutely. as long as one of the parents is positive, the child can be positive. and if one parent is A the other B, the child can be A, B, AB or O depending on the parents' other alleles. so the child can definitely be A or B positive, but also A negative, B negative, AB negative, AB positive, O positive or O negative.
Can you have o negative blood and your biological parent have a positive blood?
No, it is not possible for a biological parent with a positive blood type to have a child with O negative blood. A child inherits their blood type from their parents, and O negative blood type is only possible if both parents pass on an O allele.
What type of blood would you have if both your parents have RH blood type?
Rh is not a blood type by itself but is just one part of what makes up a blood type. There are two parts to blood typing: the ABO aspect and the Rh factor. One has blood type A, B, AB, or O, AND then is either Rh positive, or Rh negative. Hence why you hear blood types like A positive, O negative, etc. The positive/ negative is referring to the Rh factor. Rh positive is dominant, so one only needs one Rh positive parent so be Rh positive. Rh negative is recessive. If both parents are Rh negative, the child they have must be Rh negative as well. To know what blood type you could be, you need to know your parents' entire blood type.
If you have A positive blood and your baby has O negative blood does that mean the father of your child would have to have negative blood?
no, he has at least one - but the other half could be + or - if baby is -- then both parents gave - meaning they both are one of these +- or --
If both parents are A positive can a child be B positive or negative?
Maybe. A child will have either the mother's blood type or the father's blood type. If the father is B+ and the mother is A- then it is possible that the children have the same father. So it all depends on both parent's blood type.Source: I am a 2nd year nursing student, and we had a long discussion about this subject last semester.
